I will wait until 4.0.10 to worry about syncing because mine seem to have stopped any syncing between laptop and others. My iPhone and iPad were missing the last five days of entries made on the laptop.
But, because I wanted the iPhone to mirror the laptop, I tried a reset but that didn’t work - it created an empty database with no data. So I did a backup of the laptop data, copied it to the cloud and did a restore from my iPhone. It ‘almost’ worked. Everything appears to be there EXCEPT: my last reservation. The new CG is there on the iPhone but the upcoming reservation is not. Back to the laptop, it is there so I don’t know if it is because of an incomplete backup or an incomplete restore - they just don’t match. This might be a problem or it might mean there is some difference between databases on the devices and what I did is a no no . .
Steve