My question is this: I have 40 greetings cards, each one designed from the same template. I have just changed the template and am wondering if I can re-apply that template to my 40 designs or do I have to start over from scratch again. If I can, some pointers would be extremely helpful.
TIA for any help you may offer.
No, you can't reapply a template, but there are other things you can do that might help.
Put the files in a "book" temporarily and set the new template as the synchronization source. Synchronize everything EXCEPT numbering.
Enable Layout Adjustment and make corrections on the master pages or in Document Setup. Anything snapped to guides should move and/or resize automatically. You might want to enable Layout Adjustment before doing the book trick, too.