I have deleted multiple masks from a comp that is being used in another comp. Before I upgraded to CS6 it would reflect on the main comp if I deleted it from the secondary comp but that is not the case...entirely. It deletes it except for a few seconds at the beginning of my main come the deleted items are still there. I have no idea how it is doing this since I deleted the objects from the comp. Is this a CS6 bug?
Could be one more of those CS6 disk cache issues. Flush the cache from the Edit menu.
Yeah that was the issue. Once I did that it was all good. Adobe should fix that issue cause it was pretty disruptive.