I'll try to track down your bug on a Windows machine since I can't reproduce it on OSX.
The support link says Blocktrades because they're the ones actually running the service, Openledger doesn't have its own support team.
The coin selections are actually saved independently right now, but I can play around with linking them and see if that gives a better flow like you say.
Abit encountered the same issue on Openledger and helped me track it down, fixed it here.
To fix it in your light wallet, you can open the dev console, go to Resources -> localStorage and delete this key:
__graphene__defaults_v1