Yes - you can open 2012 files in a 2014 version of either program.

What is the compatibility of finale 2014 with mac computers ?

what is the exploitation system ?

thanks

Finale 2014 is only compatible with Macs running 10.12 and earlier.

>Finale 2014 is only compatible with Macs running 10.12 and earlier.<

Even then, there are issues.

https://makemusic.zendesk.com/hc/en-us/articles/227137247-Finale-products-and-macOS-10-12-Sierra 

It will work in High Sierra (with the same issues) only if installed in an older OS before upgrading to 10.13.x. Finale will install in High Sierra only if version 25.4.1 or newer.