Have the same issue but with contact files. I had three (3K, 5K and 2K records each). Do I understand I now need to merge them all into a single database ?

If so is it possible to synch only one set on my iphone and not the other two ?

Lastly, I tried to import a second contact file in the database (doing the import routine and this does not seem to work any idea what I am doing wrong ?