Ok, I have 2 mods that play effect shaders in succession.

I activate the scenario in mod A, and effect shader A (longest duration) begins to play.
I activate the scenario in mod B, and effect shader B (shortest duration) begins to play.
Effect shader B finishes.
Effect shader A is gone.

My assumption is, when effect shader B plays it cancels out effect shader A. Am I correct?
If yes, then is there a magic trick I can teach mod A to check to see if it's effect shader has been over ridden, and if it has, reinitialize it where it left off (ie: not restart it from the beginning, but rather restart it where it left off)?

The ideal fix would be for mod A to watch for an interruption, wait for the interruption to cease, then continue on it's merry way.