What I see is a greyed-out song. The other player can select it , but I can't.
I glad we could explain it, prob helps people understand the madness.
I do play the plastic still; it's a nice break and there are so many awesome non-Pro songs.
Typically, if i find the incompatibilty, I will drop out, grab the plastic and invite you back. (we WILL play Runaway someday)
I would LOVE to see that export.
I would LOVE to see some of those songs get a RB3 version update.
('Epic' on Pro Keys? That would be... Well ... epic.