> I am missing something here - why would you want to force it to call post
> (I don't know if it actually calls cancel, but to me that sounds

sensible)?

Well because in AfterPost of my MasterQuery,
I will call Transaction.Commit, to commit all the changes
for the master and children records.
And in AfterCancel of MasterQuery,
I will call Transaction.Rollback, which will undo all
children records.

NavigationBar actually calls Cancel if the master is not changed,
so all my children records are undoed.

Your DummuEdit code should work. Thanks =)