Mame32 now puts a small header on the front of inp files to identify which version of Mame32 created it, which game it is from.(posted 9797 days ago)This allows MAME32 to playback the correct game for the .inp file.
If the .inp does not have the header, it assumes the user has the correct game selected and will use the file as before.
Another thing to note: MAME v 35 b 1 saw the keyboard routines change and note in the readme that previous .inp file will no longer work properly.
Good luck,
- Mike -