I'm running zen v1.3.9h

I used the 'Reset ALL Products in the selected Category to use the selected Category as the new Master Categories ID ...' in the
Global Category Link Changes and Master Category ID Resetunder the Multiple Categories Link Manager to change bulk reset all the category IDs.

It worked great....however I realized after I did it there may not be an easy way to reverse it?

I'm attempting to re-organize my store into 'shop by theme' option. So I've pulled prods from various categories to go into a seasonal theme category. I used the manager to bulk change all these items' master ID's so I could put them on sale by category but now if I want to put it back so I can put the items on sale in their original cateogries is there a way to do that???

Thanks so much in advance!