Has anyone looked into merging several pre-2.6 relationship fields into a 2.6+ multiple relationship field? For example, if I have a book store where each book can have multiple authors and currently have
book_author3. This is clearly ugly and horrible, so I would like to just have
book_authors, which would contain the related authors from any of the original three fields that was set.
I'm sure it could be done with enough SQL magicry, but I'm hoping someone has already figured out a good system for it.