Hi Doug,
Not really, to be honest, it wasnt exactly your scenario.
We were adding second ECC feeder system with diff time zone setup. And we had lots of Z code as well that caused to some part timezone issues..
What Vincent mentions below is also to the point, the screen is personalized for the user based on their user defaults. Also, this personalization for user also happens when outputs (idocs,forms) are sent out, (depends how much of your own Z* logic you`re usin,) so you might want to include them in your testing as well
Cheers,
B