Layer deactivation turns on and off

It could possibly be operator error as I am new to tracking and mocha, but the deactivation selection seems to randomly turn itself on and off, so as I play back my track and roto, they turn on and off. Any suggestions? Thank you!

O.K this sounds wierd. Would you be able to send me a project file to to pinpoint this particular problem. I am assuming this has nothing to do with the setting of the in and out points. If you send me the information maybe I can pinpoint if this is a bug or a user error.