FH11 -> AI CS-whatever seemless?

Well, due to me not being able to locate my 6 year old serial number for
Studio MX so that I can install the Studio MX 2004 upgrade I bought 4 years
ago, I am officially without Freehand.

So, I gotta buy a new copy. Seems dumb to buy a new copy of Freehand at this
point. If I purchase the latest AI, can I easily open up all my FH10 and 11
files? Or will there still be issues?

Any other software contenders I should consider that can open FH11 files?

-Darrel