I have this weird situation where I'm *copying* files from a download folder to other topic folders so as to keep the upload available. Then every so often I get a whole raft of 'missing file' errors and if I try to open the destination folder or view my download folder directly, that content is completely deleted. I've checked settings for any possible related "move on completion" options, but a general search shows the original downloads are gone. This can also happen with older torrents where I have not copied the content elsewhere.
It's under control (of a sort) at the moment, because I'm monitoring the process closely and keeping up to date with copies. Can't work out whether it's an option, a capacity issue, or me moving files by mistake - but I'm being super-careful to copy only, so that should not still be an issue. TIA for any constructive suggestions...
1TB HDD with 30% free space / Win 11 23H2 / QBT 4.6.5 (but earlier versions also had this issue)