: Sorry I didn't see this a long time ago! Nice to hear Contacts has done well for you all these years! I never took CONTACTS to the newer file formats or made it relational beyond some development versions. There are a number of templates that do this now and if you haven't already found one let me know. FileMaker's built in templates I believe have everything you need as well. That said I just converted CONTACTS to 10 and it seems to work fine though looks VERY VERY dated now.
All the best!