diff --git a/MediaBrowser.Providers/Manager/ItemImageProvider.cs b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
index dab36625e5..1475509736 100644
--- a/MediaBrowser.Providers/Manager/ItemImageProvider.cs
+++ b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
@@ -357,7 +357,12 @@ namespace MediaBrowser.Providers.Manager
             return true;
         }
 
-        private void PruneImages(BaseItem item, IReadOnlyList<ItemImageInfo> images)
+        /// <summary>
+        /// Delete images from an item.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="images">The images.</param>
+        public void PruneImages(BaseItem item, IReadOnlyList<ItemImageInfo> images)
         {
             for (var i = 0; i < images.Count; i++)
             {
diff --git a/MediaBrowser.Providers/Manager/MetadataService.cs b/MediaBrowser.Providers/Manager/MetadataService.cs
index 75291b3178..cc7e117ac9 100644
--- a/MediaBrowser.Providers/Manager/MetadataService.cs
+++ b/MediaBrowser.Providers/Manager/MetadataService.cs
@@ -688,6 +688,12 @@ namespace MediaBrowser.Providers.Manager
 
                     if (localItem.HasMetadata)
                     {
+                        var oldBackdropImages = Array.Empty<ItemImageInfo>();
+                        if (options.IsReplacingImage(ImageType.Backdrop))
+                        {
+                            oldBackdropImages = item.GetImages(ImageType.Backdrop).ToArray();
+                        }
+
                         foreach (var remoteImage in localItem.RemoteImages)
                         {
                             try
@@ -710,6 +716,12 @@ namespace MediaBrowser.Providers.Manager
                             }
                         }
 
+                        // only delete existing multi-images if new ones were added
+                        if (oldBackdropImages.Length > 0 && oldBackdropImages.Length < item.GetImages(ImageType.Backdrop).Count())
+                        {
+                            imageService.PruneImages(item, oldBackdropImages);
+                        }
+
                         if (foundImageTypes.Count > 0)
                         {
                             imageService.UpdateReplaceImages(options, foundImageTypes);