diff --git a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.test.tsx b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.test.tsx
index 9d15b2ae6b..c99b8f041a 100644
--- a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.test.tsx
+++ b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.test.tsx
@@ -262,7 +262,6 @@ test('clears lifecycle filter when switching to archived view', async () => {
     testServerRoute(server, '/api/admin/ui-config', {
         flags: {
             flagCreator: true,
-            flagsUiFilterRefactor: true,
         },
     });
 
diff --git a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.tsx b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.tsx
index 36637bd135..4cefa398b1 100644
--- a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.tsx
+++ b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureToggles.tsx
@@ -1,4 +1,3 @@
-import { ReactComponent as ImportSvg } from 'assets/icons/import.svg';
 import { useCallback, useMemo, useState } from 'react';
 import { ConditionallyRender } from 'component/common/ConditionallyRender/ConditionallyRender';
 import { PageContent } from 'component/common/PageContent/PageContent';
@@ -20,7 +19,6 @@ import {
 import { useChangeRequestsEnabled } from 'hooks/useChangeRequestsEnabled';
 import { useFeatureToggleSwitch } from '../ProjectFeatureToggles/FeatureToggleSwitch/useFeatureToggleSwitch.tsx';
 import useLoading from 'hooks/useLoading';
-import { ProjectFeatureTogglesHeader as LegacyProjectFeatureTogglesHeader } from './ProjectFeatureTogglesHeader/LegacyProjectFeatureTogglesHeader.tsx';
 import { createColumnHelper, useReactTable } from '@tanstack/react-table';
 import { withTableState } from 'utils/withTableState';
 import type { FeatureSearchResponseSchema } from 'openapi';
@@ -50,14 +48,10 @@ import { ProjectOnboarded } from 'component/onboarding/flow/ProjectOnboarded';
 import { usePlausibleTracker } from 'hooks/usePlausibleTracker';
 import { ArchivedFeatureActionCell } from '../../../archive/ArchiveTable/ArchivedFeatureActionCell/ArchivedFeatureActionCell.tsx';
 import { ArchiveBatchActions } from '../../../archive/ArchiveTable/ArchiveBatchActions.tsx';
-import PermissionIconButton from 'component/common/PermissionIconButton/PermissionIconButton';
-import { UPDATE_FEATURE } from '@server/types/permissions';
 import { ImportModal } from '../Import/ImportModal.tsx';
-import { IMPORT_BUTTON } from 'utils/testIds';
 import { ProjectCleanupReminder } from './ProjectCleanupReminder/ProjectCleanupReminder.tsx';
 import { formatEnvironmentColumnId } from './formatEnvironmentColumnId.ts';
 import { ProjectFeaturesColumnsMenu } from './ProjectFeaturesColumnsMenu/ProjectFeaturesColumnsMenu.tsx';
-import { useUiFlag } from 'hooks/useUiFlag.ts';
 import { ProjectFeatureTogglesHeader } from './ProjectFeatureTogglesHeader/ProjectFeatureTogglesHeader.tsx';
 import { ProjectFlagsSearch } from './ProjectFlagsSearch/ProjectFlagsSearch.tsx';
 
@@ -74,12 +68,6 @@ const Container = styled('div')(({ theme }) => ({
     gap: theme.spacing(2),
 }));
 
-const LegacyFilterRow = styled('div')(({ theme }) => ({
-    display: 'flex',
-    flexFlow: 'row wrap',
-    justifyContent: 'space-between',
-}));
-
 const FiltersContainer = styled('div')(({ theme }) => ({
     display: 'flex',
     flexDirection: 'column',
@@ -95,12 +83,6 @@ const FilterRow = styled('div')({
     alignItems: 'center',
 });
 
-const ButtonGroup = styled('div')(({ theme }) => ({
-    display: 'flex',
-    gap: theme.spacing(1),
-    paddingInline: theme.spacing(1.5),
-}));
-
 const LinkToggle = styled('button')(({ theme }) => ({
     background: 'none',
     border: 'none',
@@ -126,7 +108,6 @@ export const ProjectFeatureToggles = ({
     const { project } = useProjectOverview(projectId);
     const [connectSdkOpen, setConnectSdkOpen] = useState(false);
     const [modalOpen, setModalOpen] = useState(false);
-    const flagsUiFilterRefactorEnabled = useUiFlag('flagsUiFilterRefactor');
     const theme = useTheme();
     const isSmallScreen = useMediaQuery(theme.breakpoints.down('md'));
 
@@ -551,48 +532,23 @@ export const ProjectFeatureToggles = ({
             <PageContent
                 disableLoading
                 header={
-                    flagsUiFilterRefactorEnabled ? (
-                        <ProjectFeatureTogglesHeader
-                            isLoading={initialLoad}
-                            totalItems={total}
-                            environmentsToExport={environments}
-                            actions={
-                                flagsUiFilterRefactorEnabled ? (
-                                    <LinkToggle
-                                        type='button'
-                                        onClick={toggleArchived}
-                                    >
-                                        {showArchived
-                                            ? 'View active flags'
-                                            : 'View archived flags'}
-                                    </LinkToggle>
-                                ) : null
-                            }
-                            title={
-                                showArchived
-                                    ? 'Archived feature flags'
-                                    : 'Feature flags'
-                            }
-                        />
-                    ) : (
-                        <LegacyProjectFeatureTogglesHeader
-                            isLoading={initialLoad}
-                            totalItems={total}
-                            searchQuery={tableState.query || ''}
-                            onChangeSearchQuery={(query) => {
-                                setTableState({ query });
-                            }}
-                            dataToExport={data}
-                            environmentsToExport={environments}
-                            actions={
-                                <ProjectFeaturesColumnsMenu
-                                    columnVisibility={columnVisibility}
-                                    environments={environments}
-                                    onToggle={onToggleColumnVisibility}
-                                />
-                            }
-                        />
-                    )
+                    <ProjectFeatureTogglesHeader
+                        isLoading={initialLoad}
+                        totalItems={total}
+                        environmentsToExport={environments}
+                        actions={
+                            <LinkToggle type='button' onClick={toggleArchived}>
+                                {showArchived
+                                    ? 'View active flags'
+                                    : 'View archived flags'}
+                            </LinkToggle>
+                        }
+                        title={
+                            showArchived
+                                ? 'Archived feature flags'
+                                : 'Feature flags'
+                        }
+                    />
                 }
                 bodyClass='noop'
                 style={{ cursor: 'inherit' }}
@@ -602,50 +558,25 @@ export const ProjectFeatureToggles = ({
                     aria-busy={isPlaceholder}
                     aria-live='polite'
                 >
-                    {flagsUiFilterRefactorEnabled ? (
-                        <FiltersContainer>
-                            <FilterRow>
-                                {showArchived ? (
-                                    <Box sx={{ marginRight: 'auto' }}>
-                                        <ProjectOverviewFilters
-                                            project={projectId}
-                                            onChange={setTableState}
-                                            state={filterState}
-                                        />
-                                    </Box>
-                                ) : (
-                                    <ProjectLifecycleFilters
-                                        projectId={projectId}
-                                        state={filterState}
-                                        onChange={setTableState}
-                                        total={loading ? undefined : total}
-                                    />
-                                )}
-                                {isSmallScreen ? null : (
-                                    <ProjectFlagsSearch
-                                        searchQuery={tableState.query || ''}
-                                        onChangeSearchQuery={(query) => {
-                                            setTableState({ query });
-                                        }}
-                                        isLoading={loading}
-                                    />
-                                )}
-                                <ProjectFeaturesColumnsMenu
-                                    columnVisibility={columnVisibility}
-                                    environments={environments}
-                                    onToggle={onToggleColumnVisibility}
-                                />
-                            </FilterRow>
-                            {showArchived ? null : (
-                                <FilterRow>
+                    <FiltersContainer>
+                        <FilterRow>
+                            {showArchived ? (
+                                <Box sx={{ marginRight: 'auto' }}>
                                     <ProjectOverviewFilters
                                         project={projectId}
                                         onChange={setTableState}
                                         state={filterState}
                                     />
-                                </FilterRow>
+                                </Box>
+                            ) : (
+                                <ProjectLifecycleFilters
+                                    projectId={projectId}
+                                    state={filterState}
+                                    onChange={setTableState}
+                                    total={loading ? undefined : total}
+                                />
                             )}
-                            {isSmallScreen ? (
+                            {isSmallScreen ? null : (
                                 <ProjectFlagsSearch
                                     searchQuery={tableState.query || ''}
                                     onChangeSearchQuery={(query) => {
@@ -653,35 +584,32 @@ export const ProjectFeatureToggles = ({
                                     }}
                                     isLoading={loading}
                                 />
-                            ) : null}
-                        </FiltersContainer>
-                    ) : (
-                        <LegacyFilterRow>
-                            <ProjectOverviewFilters
-                                project={projectId}
-                                onChange={setTableState}
-                                state={filterState}
+                            )}
+                            <ProjectFeaturesColumnsMenu
+                                columnVisibility={columnVisibility}
+                                environments={environments}
+                                onToggle={onToggleColumnVisibility}
                             />
-                            <ProjectLifecycleFilters
-                                projectId={projectId}
-                                state={filterState}
-                                onChange={setTableState}
-                                total={loading ? undefined : total}
+                        </FilterRow>
+                        {showArchived ? null : (
+                            <FilterRow>
+                                <ProjectOverviewFilters
+                                    project={projectId}
+                                    onChange={setTableState}
+                                    state={filterState}
+                                />
+                            </FilterRow>
+                        )}
+                        {isSmallScreen ? (
+                            <ProjectFlagsSearch
+                                searchQuery={tableState.query || ''}
+                                onChangeSearchQuery={(query) => {
+                                    setTableState({ query });
+                                }}
+                                isLoading={loading}
                             />
-                            <ButtonGroup>
-                                <PermissionIconButton
-                                    permission={UPDATE_FEATURE}
-                                    projectId={projectId}
-                                    onClick={() => setModalOpen(true)}
-                                    tooltipProps={{ title: 'Import' }}
-                                    data-testid={IMPORT_BUTTON}
-                                    data-loading-project
-                                >
-                                    <ImportSvg />
-                                </PermissionIconButton>
-                            </ButtonGroup>
-                        </LegacyFilterRow>
-                    )}
+                        ) : null}
+                    </FiltersContainer>
                     <SearchHighlightProvider value={tableState.query || ''}>
                         <PaginatedTable
                             tableInstance={table}
diff --git a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureTogglesHeader/LegacyProjectFeatureTogglesHeader.tsx b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureTogglesHeader/LegacyProjectFeatureTogglesHeader.tsx
deleted file mode 100644
index ffa4ac1a8c..0000000000
--- a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectFeatureTogglesHeader/LegacyProjectFeatureTogglesHeader.tsx
+++ /dev/null
@@ -1,165 +0,0 @@
-import { type ReactNode, type FC, useState } from 'react';
-import {
-    Box,
-    Button,
-    IconButton,
-    Tooltip,
-    useMediaQuery,
-    useTheme,
-} from '@mui/material';
-import useLoading from 'hooks/useLoading';
-import { PageHeader } from 'component/common/PageHeader/PageHeader';
-import { ConditionallyRender } from 'component/common/ConditionallyRender/ConditionallyRender';
-import { Search } from 'component/common/Search/Search';
-import { useRequiredPathParam } from 'hooks/useRequiredPathParam';
-import { ExportDialog } from 'component/feature/FeatureToggleList/ExportDialog';
-import type { FeatureSchema } from 'openapi';
-import { usePlausibleTracker } from 'hooks/usePlausibleTracker';
-import ReviewsOutlined from '@mui/icons-material/ReviewsOutlined';
-import { useFeedback } from 'component/feedbackNew/useFeedback';
-import IosShare from '@mui/icons-material/IosShare';
-import { FlagCreationButton } from './FlagCreationButton/FlagCreationButton.tsx';
-
-interface IProjectFeatureTogglesHeaderProps {
-    isLoading?: boolean;
-    totalItems?: number;
-    searchQuery?: string;
-    onChangeSearchQuery?: (query: string) => void;
-    dataToExport?: Pick<FeatureSchema, 'name'>[];
-    environmentsToExport?: string[];
-    actions?: ReactNode;
-}
-
-/**
- * @deprecated remove with `flagsUiFilterRefactor` flag
- */
-export const ProjectFeatureTogglesHeader: FC<
-    IProjectFeatureTogglesHeaderProps
-> = ({
-    isLoading,
-    totalItems,
-    searchQuery,
-    onChangeSearchQuery,
-    environmentsToExport,
-    actions,
-}) => {
-    const projectId = useRequiredPathParam('projectId');
-    const headerLoadingRef = useLoading(isLoading || false);
-    const [showTitle, setShowTitle] = useState(true);
-    const theme = useTheme();
-    const isSmallScreen = useMediaQuery(theme.breakpoints.down('md'));
-    const [showExportDialog, setShowExportDialog] = useState(false);
-    const { trackEvent } = usePlausibleTracker();
-    const projectOverviewRefactorFeedback = false;
-    const { openFeedback } = useFeedback('newProjectOverview', 'automatic');
-    const handleSearch = (query: string) => {
-        onChangeSearchQuery?.(query);
-        trackEvent('search-bar', {
-            props: {
-                screen: 'project',
-                length: query.length,
-            },
-        });
-    };
-
-    const createFeedbackContext = () => {
-        openFeedback({
-            title: 'How easy was it to work with the project overview in Unleash?',
-            positiveLabel:
-                'What do you like most about the updated project overview?',
-            areasForImprovementsLabel:
-                'What improvements are needed in the project overview?',
-        });
-    };
-
-    return (
-        <Box ref={headerLoadingRef} aria-busy={isLoading} aria-live='polite'>
-            <PageHeader
-                titleElement={
-                    showTitle
-                        ? `Feature flags ${
-                              totalItems !== undefined ? `(${totalItems})` : ''
-                          }`
-                        : null
-                }
-                actions={
-                    <>
-                        <ConditionallyRender
-                            condition={!isSmallScreen}
-                            show={
-                                <Search
-                                    data-loading
-                                    placeholder='Search and Filter'
-                                    expandable
-                                    initialValue={searchQuery || ''}
-                                    onChange={handleSearch}
-                                    onFocus={() => setShowTitle(false)}
-                                    onBlur={() => setShowTitle(true)}
-                                    hasFilters
-                                    id='projectFeatureFlags'
-                                />
-                            }
-                        />
-                        {actions}
-                        <PageHeader.Divider sx={{ marginLeft: 0 }} />
-                        <Tooltip title='Export all project flags' arrow>
-                            <IconButton
-                                data-loading
-                                onClick={() => setShowExportDialog(true)}
-                                sx={(theme) => ({
-                                    marginRight: theme.spacing(2),
-                                })}
-                            >
-                                <IosShare />
-                            </IconButton>
-                        </Tooltip>
-
-                        <ConditionallyRender
-                            condition={!isLoading}
-                            show={
-                                <ExportDialog
-                                    showExportDialog={showExportDialog}
-                                    project={projectId}
-                                    data={[]}
-                                    onClose={() => setShowExportDialog(false)}
-                                    environments={environmentsToExport || []}
-                                />
-                            }
-                        />
-
-                        {/* FIXME: remove */}
-                        <ConditionallyRender
-                            condition={
-                                projectOverviewRefactorFeedback &&
-                                !isSmallScreen
-                            }
-                            show={
-                                <Button
-                                    startIcon={<ReviewsOutlined />}
-                                    onClick={createFeedbackContext}
-                                    variant='outlined'
-                                    data-loading
-                                >
-                                    Provide feedback
-                                </Button>
-                            }
-                        />
-                        <FlagCreationButton isLoading={isLoading} />
-                    </>
-                }
-            >
-                <ConditionallyRender
-                    condition={isSmallScreen}
-                    show={
-                        <Search
-                            initialValue={searchQuery || ''}
-                            onChange={handleSearch}
-                            hasFilters
-                            id='projectFeatureFlags'
-                        />
-                    }
-                />
-            </PageHeader>
-        </Box>
-    );
-};
diff --git a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectLifecycleFilters.tsx b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectLifecycleFilters.tsx
index 09725f5a18..331265e4ef 100644
--- a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectLifecycleFilters.tsx
+++ b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectLifecycleFilters.tsx
@@ -3,8 +3,7 @@ import { useEffect } from 'react';
 import type { FilterItemParamHolder } from '../../../filter/Filters/Filters.tsx';
 import { useProjectStatus } from 'hooks/api/getters/useProjectStatus/useProjectStatus';
 import { LifecycleFilters } from 'component/common/LifecycleFilters/LifecycleFilters.tsx';
-import { Box, useMediaQuery, useTheme } from '@mui/material';
-import { useUiFlag } from 'hooks/useUiFlag.ts';
+import { Box, useTheme } from '@mui/material';
 
 type ProjectLifecycleFiltersProps = {
     projectId: string;
@@ -23,8 +22,6 @@ export const ProjectLifecycleFilters: FC<ProjectLifecycleFiltersProps> = ({
 }) => {
     const { data } = useProjectStatus(projectId);
     const theme = useTheme();
-    const isSmallScreen = useMediaQuery(theme.breakpoints.down('md'));
-    const flagsUiFilterRefactorEnabled = useUiFlag('flagsUiFilterRefactor');
     const lifecycleSummary = Object.entries(
         data?.lifecycleSummary || {},
     ).reduce(
@@ -47,18 +44,7 @@ export const ProjectLifecycleFilters: FC<ProjectLifecycleFiltersProps> = ({
     }
 
     return (
-        <Box
-            sx={{
-                marginRight: 'auto',
-                ...(flagsUiFilterRefactorEnabled
-                    ? {}
-                    : {
-                          margin: isSmallScreen
-                              ? theme.spacing(0, 3)
-                              : `${theme.spacing(1.5)} auto ${theme.spacing(1.5)} ${theme.spacing(3)}`,
-                      }),
-            }}
-        >
+        <Box sx={{ marginRight: 'auto' }}>
             <LifecycleFilters
                 state={state}
                 onChange={onChange}
diff --git a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectOverviewFilters.tsx b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectOverviewFilters.tsx
index 13f82271f8..168c025c90 100644
--- a/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectOverviewFilters.tsx
+++ b/frontend/src/component/project/Project/PaginatedProjectFeatureToggles/ProjectOverviewFilters.tsx
@@ -8,7 +8,6 @@ import {
 import { useProjectFlagCreators } from 'hooks/api/getters/useProjectFlagCreators/useProjectFlagCreators';
 import { formatTag } from 'utils/format-tag';
 import { styled } from '@mui/material';
-import { useUiFlag } from 'hooks/useUiFlag';
 
 type ProjectOverviewFiltersProps = {
     state: FilterItemParamHolder;
@@ -28,10 +27,6 @@ export const ProjectOverviewFilters: FC<ProjectOverviewFiltersProps> = ({
     const { tags } = useAllTags();
     const { flagCreators } = useProjectFlagCreators(project);
     const [availableFilters, setAvailableFilters] = useState<IFilterItem[]>([]);
-    const flagsUiFilterRefactorEnabled = useUiFlag('flagsUiFilterRefactor');
-    const FilterComponent = flagsUiFilterRefactorEnabled
-        ? StyledFilters
-        : Filters;
 
     useEffect(() => {
         const tagsOptions = (tags || []).map((tag) => {
@@ -120,25 +115,13 @@ export const ProjectOverviewFilters: FC<ProjectOverviewFiltersProps> = ({
                 singularOperators: ['IS', 'IS_NOT'],
                 pluralOperators: ['IS_ANY_OF', 'IS_NONE_OF'],
             },
-            ...(!flagsUiFilterRefactorEnabled
-                ? [
-                      {
-                          label: 'Show only archived',
-                          icon: 'inventory',
-                          options: [{ label: 'True', value: 'true' }],
-                          filterKey: 'archived',
-                          singularOperators: ['IS'],
-                          pluralOperators: ['IS_ANY_OF'],
-                      } satisfies IFilterItem,
-                  ]
-                : []),
         ];
 
         setAvailableFilters(availableFilters);
     }, [JSON.stringify(tags), JSON.stringify(flagCreators)]);
 
     return (
-        <FilterComponent
+        <StyledFilters
             availableFilters={availableFilters}
             state={state}
             onChange={onChange}
diff --git a/frontend/src/interfaces/uiConfig.ts b/frontend/src/interfaces/uiConfig.ts
index cd0dcbf263..1c84ae5289 100644
--- a/frontend/src/interfaces/uiConfig.ts
+++ b/frontend/src/interfaces/uiConfig.ts
@@ -88,7 +88,6 @@ export type UiFlags = {
     lifecycleGraphs?: boolean;
     newStrategyModal?: boolean;
     globalChangeRequestList?: boolean;
-    flagsUiFilterRefactor?: boolean;
     trafficBillingDisplay?: boolean;
     milestoneProgression?: boolean;
     featureReleasePlans?: boolean;
diff --git a/src/lib/types/experimental.ts b/src/lib/types/experimental.ts
index a323cf5a9b..53e2ec9315 100644
--- a/src/lib/types/experimental.ts
+++ b/src/lib/types/experimental.ts
@@ -60,7 +60,6 @@ export type IFlagKey =
     | 'newStrategyModal'
     | 'globalChangeRequestList'
     | 'newUiConfigService'
-    | 'flagsUiFilterRefactor'
     | 'trafficBillingDisplay'
     | 'milestoneProgression'
     | 'envAddStrategySuggestion'
@@ -277,10 +276,6 @@ const flags: IFlags = {
         process.env.UNLEASH_EXPERIMENTAL_NEW_UI_CONFIG_SERVICE,
         false,
     ),
-    flagsUiFilterRefactor: parseEnvVarBoolean(
-        process.env.UNLEASH_EXPERIMENTAL_FLAGS_UI_FILTER_REFACTOR,
-        false,
-    ),
     trafficBillingDisplay: parseEnvVarBoolean(
         process.env.UNLEASH_EXPERIMENTAL_TRAFFIC_BILLING_DISPLAY,
         false,
diff --git a/src/server-dev.ts b/src/server-dev.ts
index ee5db9f2be..2d5886c5b3 100644
--- a/src/server-dev.ts
+++ b/src/server-dev.ts
@@ -56,7 +56,6 @@ process.nextTick(async () => {
                         newStrategyModal: true,
                         globalChangeRequestList: true,
                         newUiConfigService: true,
-                        flagsUiFilterRefactor: true,
                         trafficBillingDisplay: true,
                         milestoneProgression: true,
                         featureReleasePlans: true,