Yes, that is what I means,
change 1 setting on the Win 7, then import back the old one to see did the new setting is getting delete or not.
But I think you can ignore this one.
Try go to C:\Users\%USERNAME%\AppData\Roaming\ProcessLasso\config, then compare with your export one, check if there are the same or not.
This step make sure that did it is a bug for export the config or not.
And also try just copy that one, and paste it at the same location on the Win 8.1 computer.