Zotero 8's new automatic file renaming for manual metadata edits has unintended consequences - hidden preference fix

[TW96]

Zotero 8 introduced automatic renaming of attachment files when any manual edits are made to an item's metadata.
https://www.zotero.org/blog/zotero-8/#continuous-file-renaming

This has unintended consequences relevant to the way that Zotmoov usually works. Firstly it automatically overwrites the filename, including any manual changes you might have deliberately made to that file name. Secondly, it also overwrites the attachment title with Zotero's idea of "sensible" titles ... "PDF", "Webpage", etc. Of course Zotmoov has typically automatically set the title to be the same as the linked filename when that file was added to Zotero (as Zotfile used to do).

Fortunately there is a hidden preference in the Config Editor (Edit\Settings\Advanced) to turn off those Zotero actions, when it is toggled from true (the default) to false:
extensions.zotero.autoRenameFiles.onMetadataChange

That returns everything to pre Zotero 8 behaviour. That is, the filename and title remain as Zotmoov set them when the file was added (or as you subsequently edited them).

If you actually want the filename to be updated when you edit say the item's author/title/date, you can use the technique that has always worked to rewrite a new filename, right-click Zotmoov: Move Selected to Directory (of course the linked file is usually already in the intended directory, so this operation only does the file renaming that is also part of the process).