That is the problem with the Inv Part Availability Exceptions, because they are dependent on the MRP run and other supply/demand changes, then running the exceptions again, the exceptions are regenerated - like requisitions - so they don’t remain.  Thus, unless you take a snapshot of the notes somewhere else, they will disappear.

Ultimately, this is the reason I find that our users find the Exceptions not very useful, because who can get through their list in a day - every day….