A blanket rule to map all note ons to program changes is actually really simple:
9X = CX
As for copying scenes from one device to another. Currently no easy way, although you can use something like iFunbox and copy the contents for the MidiBridge 'Documents' folder from one device to another. You can probably copy individual scenes with iFunbox (there are two files per scene) there is a 'directory' file that would need to be manually modified. It's fiddly and probably fraught with potential woe, so only try this if you are desperate!