Will registering older exclusive tracks with pro cause problems ?

I’m a member of a pro.
I’ve chosen to become an exclusive author with AJ.
I made the change a while back to show that I am registered to a pro.
I’d like to register all tracks, but I haven’t yet.
Is AJ’s new set up similar to exclusive libraries where your tracks can be registered as well
for collecting performance royalties ?
I’ve been fortunate enough to get some sales and I don’t want to miss out on the extra pocket change ;p
A free coffee is a free coffee…