A move cmarked that wasn't analyzed clears it's cmark status when it's analyzed the first time. (20091102, but the bug is old)
To reproduce:
1. Start a new money session 2. CMark a gnubg's move or -with the tutor on- an own move
3. Analyze -> Analyze match or session 4. The move isn't cmarked any more.
I attach my settings in case the bug has to do with them.
gnubgautorc