My clock resets if it doesn't start first time. I'm putting it down to a battery issue. I will replace mine in the Autumn ready for the Winter, it's not really too much a problem now.
The bike’s got an almost new battery so I knew it wasn’t that and just typing 1150 GS clock not working into Google gave me the answer. When I made my post about it not working I was sunning myself outside a pub on the way home and not interested enough to try and find out why it didn’t work