Hi, Robert,
I just tried an application with the steps you described. I didn't see the problem. That is, the update that is rolled back takes no effect.
On the other side, after changing to rollback=false, I can see the new changes. If you still see the issue, please attach a testcase.
I'm running Sun Java System Application Server 9.1_02, which corresponds to glassfish v2u2.
-cheng
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