is there a script that one can run to transfer configs from v10.2.2 to v11.5.0

I have a client whom I recently upgraded the software for; from v10.2.2 to v11.5.0 HF3. However, when I boot into the v11.5.0 partition, none of the configs have carried over. It's worth noting that there are Profiles, iRules,etc (which is quite complex) and certs on the v10.2.2 partition that might also cause syntax errors. Isnt there a script that may assist in this dilemma. I don't think it'll be fun having to reconfigure the device all over again.