Import songs from Stuido One 2 to Studio One 4

Hi! I have Studio One 2 and want to upgrade to Studio One 4.

I've seen some posts about being able to open your S2 songs in S3, and your S3 songs in S4. But does it work the same all the way? Will I be able to open my songs which I made in S2 and continue working on them in S4?

Thank you