I am trying to create a large catalog. I have 3 very different product types that require different info, and therefore I think, completely different templates. I was thinking that I will need to create three separate data merge templates/ merges, but then I would like to combine them all into one indesign book. Is there an easy way to do this without copying and pasting all of the products from each into one main book?
You can make three separate ID files and then combine them into a book. The book file is merely a super set of the individual ID files.