diff --git a/server/models/Author.js b/server/models/Author.js
index 220abeb8..c6537ec1 100644
--- a/server/models/Author.js
+++ b/server/models/Author.js
@@ -1,4 +1,4 @@
-const { DataTypes, Model, literal } = require('sequelize')
+const { DataTypes, Model, where, fn, col } = require('sequelize')
 
 const oldAuthor = require('../objects/entities/Author')
 
@@ -114,14 +114,11 @@ class Author extends Model {
   static async getOldByNameAndLibrary(authorName, libraryId) {
     const author = (await this.findOne({
       where: [
-        literal(`name = ':authorName' COLLATE NOCASE`),
+        where(fn('lower', col('name')), authorName.toLowerCase()),
         {
           libraryId
         }
-      ],
-      replacements: {
-        authorName
-      }
+      ]
     }))?.getOldAuthor()
     return author
   }
diff --git a/server/models/Series.js b/server/models/Series.js
index 2b37002d..81c27a8b 100644
--- a/server/models/Series.js
+++ b/server/models/Series.js
@@ -1,4 +1,4 @@
-const { DataTypes, Model, literal } = require('sequelize')
+const { DataTypes, Model, where, fn, col } = require('sequelize')
 
 const oldSeries = require('../objects/entities/Series')
 
@@ -105,14 +105,11 @@ class Series extends Model {
   static async getOldByNameAndLibrary(seriesName, libraryId) {
     const series = (await this.findOne({
       where: [
-        literal(`name = ':seriesName' COLLATE NOCASE`),
+        where(fn('lower', col('name')), seriesName.toLowerCase()),
         {
           libraryId
         }
-      ],
-      replacements: {
-        seriesName
-      }
+      ]
     }))?.getOldSeries()
     return series
   }
diff --git a/server/routers/ApiRouter.js b/server/routers/ApiRouter.js
index a0bb2544..71d9429e 100644
--- a/server/routers/ApiRouter.js
+++ b/server/routers/ApiRouter.js
@@ -553,13 +553,17 @@ class ApiRouter {
             continue
           }
 
+          if (mediaMetadata.authors[i].id?.startsWith('new')) {
+            mediaMetadata.authors[i].id = null
+          }
+
           // Ensure the ID for the author exists
           if (mediaMetadata.authors[i].id && !(await Database.checkAuthorExists(libraryId, mediaMetadata.authors[i].id))) {
             Logger.warn(`[ApiRouter] Author id "${mediaMetadata.authors[i].id}" does not exist`)
             mediaMetadata.authors[i].id = null
           }
 
-          if (!mediaMetadata.authors[i].id || mediaMetadata.authors[i].id.startsWith('new')) {
+          if (!mediaMetadata.authors[i].id) {
             let author = await Database.authorModel.getOldByNameAndLibrary(authorName, libraryId)
             if (!author) {
               author = new Author()
@@ -590,13 +594,17 @@ class ApiRouter {
             continue
           }
 
+          if (mediaMetadata.series[i].id?.startsWith('new')) {
+            mediaMetadata.series[i].id = null
+          }
+
           // Ensure the ID for the series exists
           if (mediaMetadata.series[i].id && !(await Database.checkSeriesExists(libraryId, mediaMetadata.series[i].id))) {
             Logger.warn(`[ApiRouter] Series id "${mediaMetadata.series[i].id}" does not exist`)
             mediaMetadata.series[i].id = null
           }
 
-          if (!mediaMetadata.series[i].id || mediaMetadata.series[i].id.startsWith('new')) {
+          if (!mediaMetadata.series[i].id) {
             let seriesItem = await Database.seriesModel.getOldByNameAndLibrary(seriesName, libraryId)
             if (!seriesItem) {
               seriesItem = new Series()