This is a minor but very easy to replicate bug.
- Create Mouse Move Action
- Set mouse "move right = 10 pixels", " move down = 10 pixels"
- Save command
- Edit command
- Tick "Move using relative data" to convert it to 10 mickeys
- Hit OK to close action editor: now the action in the command editor says "move ... 10 mickeys ... "
- Hit OK to close command editor: now the action has been reverted back to using pixels.
I tried a few ways of forcing a save by adding extra actions to the command, but the only way I could make it be saved was to create a new mouse action using mickeys and delete the old one.