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i don't think these permissions are enforced client side... I also think write and delete are separate permissions on windows and i am pretty sure i never lost a file on accidentally doing only the first halt of a cut and paste aka move... so i conclude this "someone" either had nothing to do with the incident or removed it by accident...

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I was surprised as well, but we could reproduce it. Delete would not work, "normal" cut and paste would throw an error when pasting, but cut and switch off power -> file was gone.

Sounds like something funky was going on, server side. For file operations, I don't believe the OS does anything to the file/folder for Cut and Copy operations, it simply notes the handle. Its only when you paste the file is when the operation happens. You can try this yourself, cut/copy a large file and see if your mem usage spikes and/or perform cut on any folder which you don't have delete rights for.

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