Great question, Jim.
While we haven't yet tested DayBack in Catalina, Claris states that FileMaker 18.0.3 is compatible with Catalina, so we don't expect there to be any issues. There are a few compatibility issues reported, but none that should affect DayBack:
https://support.filemaker.com/s/article ... uage=en_USEarlier versions of FMP, including FMP18 before 18.0.3 have a known issue where FileMaker crashes when exiting layout mode, so you'll want to make sure that any computers you upgrade are running the latest version of FileMaker.
Please let us know if you do run into any issues and we'll dive in to troubleshoot.
Regards,
KC