Impossible to modify backup scripts?

I downloaded a trial, build 39216, to see if there has been any positive progress. I have disabled all protection in the UI of TI but i can still not make changes to the backup script and wonder if that is to expect today.
I want to change from @task@.tib to @task@-@date@-@time@.tib and have been able to do that in TI2020 and earlier. Now i am asked to save the file and when i do i am warned that the file will be replaced and when i click OK i get a message saying that it worked successfully. And then the same Save As window pops up again, and again.
Is it impossible today?
Win 10 (21H1), i am the Administrator on the computer.


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Thanks, that did the trick.
I am ok with that the backup scripts are hard/impossible to change by default but am not ok with that adding date and time is not yet brought back to the UI. Now there is a good reason to bring it back.
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and that, my friends, is one of the many reasons I have opted for a different backup solution.
Just too many glitches.
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Perdido Beach wrote:and that, my friends, is one of the many reasons I have opted for a different backup solution.
What backup solution did you choose?
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Roger, you may find an answer in topic: Reflecting on a Post-ATI World
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