Compatibility - between products and versions


I have a question about comparability between products and versions.

I’m about to start a project. The team has

Animate 2 and Animate 3

I was proposing to get Harmony.

Are we going to have issues with compatibility (backwards compatibility?)

Any help and advice is appreciated.

Toon Boom does the converting manually which is especially helpful in your case because having files from two versions of Animate Pro is more complicated to deal with than files from one version of course.