Hi Brian, by default MoI v3 and v4 both use the same moi.ini file where your shortcut keys are stored. So they will have the same shortcuts between them.

If you want though it is possible to make each of them use a separate moi.ini file and so have separate settings. To do that you can either pass the path to a moi.ini file as a command line parameter to moi.exe, or you can move the moi.ini file into the same directory as moi.exe and it will find it there but if you do the second one you would need to run moi.exe with elevated privileges ("Run as Administrator") because at the default privilege level Windows will prevent programs from modifying files in the "Program files" directory.

- Michael