The simplest option is to temporarily rename the original Folder - in Windows Explorer.
When you open the show it will come up with Image Not Found message.
Click Find File & navigate to your new Folder.
It should find all the files in one go - Check for a Green Tick against all files.
Save the Project - Save As - to the new Folder
Then you can Rename your original Folder back to what it was.
Hope this helps
Jill