B2019-060: On procedure set import, could not import set with same (folder) name even though set had been deleted

PROMS/VEPROMS.CSLA.Library/Generated/Folder.cs

@@ -934,6 +934,9 @@ namespace VEPROMS.CSLA.Library
 				throw new System.Security.SecurityException("User not authorized to remove a Folder");
 			try
 			{
+				// B2019-060: On delete, remove the folder from cache:
+				Folder tmp = Folder.Get(folderID);
+				tmp.RemoveFromDictionaries();
 				DataPortal.Delete(new PKCriteria(folderID));
 			}
 			catch (Exception ex)