Can Harmony v22 and v20 work together?

I currently have a Harmony license through my school and don’t know if I should update from Harmony v20 to v22. What’s stopping me is that I am unsure how collaboration on projects will work out if I end up working with a classmate who has an older version than me. Most still use v20.

Can Harmony 20 open/use Harmony 22 files and vise-versa?