better method to obtain the folderName

src/NzbDrone.Api/Series/MovieResource.cs

@@ -45,6 +45,7 @@ namespace NzbDrone.Api.Movie
         public bool Monitored { get; set; }
 	    public MovieStatusType MinimumAvailability { get; set; }
         public bool IsAvailable { get; set; }
+        public string FolderName { get; set; }
 
         public int Runtime { get; set; }
         public DateTime? LastInfoSync { get; set; }
@@ -135,6 +136,7 @@ namespace NzbDrone.Api.Movie
                 MinimumAvailability = model.MinimumAvailability,
 		
                 IsAvailable = model.IsAvailable(),
+                FolderName = model.FolderName(),
 
                 SizeOnDisk = size,
 

src/NzbDrone.Core/Tv/Movie.cs

@@ -5,6 +5,7 @@ using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Datastore;
 using NzbDrone.Core.Profiles;
 using NzbDrone.Core.MediaFiles;
+using System.IO;
 
 namespace NzbDrone.Core.Tv
 {
@@ -54,6 +55,11 @@ namespace NzbDrone.Core.Tv
 
         public bool HasFile => MovieFileId > 0;
 
+        public string FolderName()
+        {
+            return new DirectoryInfo(Path).Name;
+        }
+
         public bool IsAvailable(int delay = 0)
         {
             //the below line is what was used before delay was implemented, could still be used for cases when delay==0

src/UI/Movies/Editor/MovieEditorFooterView.js

@@ -137,8 +137,7 @@ module.exports = Marionette.ItemView.extend({
 
                 if (rootFolder !== 'noChange') {
                 	var rootFolderPath = RootFolders.get(parseInt(rootFolder, 10));
-					var currentPath = m.get('path');
+					var folderName = m.get('folderName');
-					var folderName = currentPath.substring(currentPath.lastIndexOf('\\')+1);
                 	m.set('path', rootFolderPath.get('path')+ folderName);
             	}
 			}