diff --git a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ProgressionChange.tsx b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ProgressionChange.tsx
index c23aea943d..20dc2b3897 100644
--- a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ProgressionChange.tsx
+++ b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ProgressionChange.tsx
@@ -54,7 +54,7 @@ export const ProgressionChange: FC<ProgressionChangeProps> = ({
 
     const sourceId = isCreate
         ? change.payload.sourceMilestone
-        : change.payload.sourceMilestoneId || change.payload.sourceMilestone;
+        : change.payload.sourceMilestoneId;
 
     if (!sourceId) return null;
 
diff --git a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ReleasePlanChange.tsx b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ReleasePlanChange.tsx
index d29d8c23d7..c165d89e28 100644
--- a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ReleasePlanChange.tsx
+++ b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/ReleasePlanChange.tsx
@@ -239,7 +239,6 @@ const AddReleasePlan: FC<{
     );
 };
 
-
 const ConsolidatedProgressionChanges: FC<{
     feature: IChangeRequestFeature;
     currentReleasePlan?: IReleasePlan;
@@ -312,8 +311,7 @@ const ConsolidatedProgressionChanges: FC<{
             .map((change) =>
                 change.action === 'createMilestoneProgression'
                     ? change.payload.sourceMilestone
-                    : change.payload.sourceMilestoneId ||
-                      change.payload.sourceMilestone,
+                    : change.payload.sourceMilestoneId,
             )
             .filter((id): id is string => Boolean(id)),
     );
@@ -321,11 +319,7 @@ const ConsolidatedProgressionChanges: FC<{
     const milestonesWithDeletedAutomation = new Set(
         progressionChanges
             .filter((change) => change.action === 'deleteMilestoneProgression')
-            .map(
-                (change) =>
-                    change.payload.sourceMilestoneId ||
-                    change.payload.sourceMilestone,
-            )
+            .map((change) => change.payload.sourceMilestoneId)
             .filter((id): id is string => Boolean(id)),
     );
 
@@ -333,8 +327,7 @@ const ConsolidatedProgressionChanges: FC<{
         const sourceId =
             change.action === 'createMilestoneProgression'
                 ? change.payload.sourceMilestone
-                : change.payload.sourceMilestoneId ||
-                  change.payload.sourceMilestone;
+                : change.payload.sourceMilestoneId;
         const sourceName =
             basePlan.milestones.find((milestone) => milestone.id === sourceId)
                 ?.name || sourceId;
diff --git a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/useModifiedReleasePlan.ts b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/useModifiedReleasePlan.ts
index c324f7046f..311a23b3ed 100644
--- a/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/useModifiedReleasePlan.ts
+++ b/frontend/src/component/changeRequest/ChangeRequest/Changes/Change/useModifiedReleasePlan.ts
@@ -17,7 +17,6 @@ export const useModifiedReleasePlan = (
     return {
         ...basePlan,
         milestones: basePlan.milestones.map((milestone) => {
-            // Find if there's a progression change for this milestone
             const createChange = progressionChanges.find(
                 (change): change is IChangeRequestCreateMilestoneProgression =>
                     change.action === 'createMilestoneProgression' &&
@@ -26,31 +25,14 @@ export const useModifiedReleasePlan = (
             const updateChange = progressionChanges.find(
                 (change): change is IChangeRequestUpdateMilestoneProgression =>
                     change.action === 'updateMilestoneProgression' &&
-                    (change.payload.sourceMilestoneId === milestone.id ||
-                        change.payload.sourceMilestone === milestone.id),
+                    change.payload.sourceMilestoneId === milestone.id,
             );
             const deleteChange = progressionChanges.find(
                 (change): change is IChangeRequestDeleteMilestoneProgression =>
                     change.action === 'deleteMilestoneProgression' &&
-                    (change.payload.sourceMilestoneId === milestone.id ||
-                        change.payload.sourceMilestone === milestone.id),
+                    change.payload.sourceMilestoneId === milestone.id,
             );
 
-            // Check for conflicting changes (delete + create/update for same milestone)
-            if (deleteChange && (createChange || updateChange)) {
-                console.warn(
-                    '[useModifiedReleasePlan] Conflicting changes detected for milestone:',
-                    {
-                        milestone: milestone.name,
-                        hasCreate: !!createChange,
-                        hasUpdate: !!updateChange,
-                        hasDelete: !!deleteChange,
-                    },
-                );
-            }
-
-            // If there's a delete change, remove the transition condition
-            // Delete takes precedence over create/update
             if (deleteChange) {
                 return {
                     ...milestone,
diff --git a/frontend/src/component/changeRequest/changeRequest.types.ts b/frontend/src/component/changeRequest/changeRequest.types.ts
index a5f96c3f91..909ff664e5 100644
--- a/frontend/src/component/changeRequest/changeRequest.types.ts
+++ b/frontend/src/component/changeRequest/changeRequest.types.ts
@@ -304,13 +304,11 @@ type ChangeRequestCreateMilestoneProgression =
 type ChangeRequestUpdateMilestoneProgression =
     UpdateMilestoneProgressionSchema & {
         sourceMilestoneId?: string;
-        sourceMilestone?: string; // Backward compatibility for existing change requests
         snapshot?: IReleasePlan;
     };
 
 type ChangeRequestDeleteMilestoneProgression = {
     sourceMilestoneId?: string;
-    sourceMilestone?: string; // Backward compatibility for existing change requests
     snapshot?: IReleasePlan;
 };
 
diff --git a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
index 5a6d73feec..ad5df12c0e 100644
--- a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
+++ b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
@@ -146,15 +146,10 @@ export const ReleasePlan = ({
             const progressionChange = featureInChangeRequest.changes.find(
                 (change: any) =>
                     (change.action === 'updateMilestoneProgression' &&
-                        (change.payload.sourceMilestoneId ===
-                            sourceMilestoneId ||
-                            change.payload.sourceMilestone ===
-                                sourceMilestoneId)) ||
+                        change.payload.sourceMilestoneId ===
+                            sourceMilestoneId) ||
                     (change.action === 'deleteMilestoneProgression' &&
-                        (change.payload.sourceMilestoneId ===
-                            sourceMilestoneId ||
-                            change.payload.sourceMilestone ===
-                                sourceMilestoneId)),
+                        change.payload.sourceMilestoneId === sourceMilestoneId),
             );
 
             if (progressionChange) {