Reset service light = reset computer and seats?

I picked up my car right before my mechanic closed and he said he had to disconnect the rear brake pad sensor and reset the service light, I thought I needed new rear brake pads.



The memory seat settings, navigation settings(avoid ferries, 3d maps, nightmode), saved radio stations, split screen setting, air conditioning temperature, equaliser and a few other things all reset back to defaults.



But ironically not service number and BMW hotline number.



Any1 else experienced this?



So anyway, lesson to take home here is, if you have a service light, make note of all your settings.