There is a program for editing GT2 dex saves. First u have to convert it to what's called a single game save, then u can open it with the editor and hybrid with it. I haven't done much with it myself, as I did all my hybriding with a cdx or GSpro, but I did enough to know it works. I have it somewhere if U want it, I'll look around and send it to ya.
PM me with your email.