[Bug]: remove of TAG-entries nor remove line for TAGs within in OPF-File will not remove TAG on library-Item after rescan

[Gru0810]

What happened?

I changed OPF-File by remove TAG-Value , started a rescan but "Fantasy" was not removed on library-Item:

What did you expect to happen?

remove TAG-Value from OPF-File, run "re-scan" -> TAG will also removed from library-item

Steps to reproduce the issue

Audiobookshelf version

2.8.1

How are you running audiobookshelf?

Docker

What OS is your Audiobookshelf server hosted from?

Linux

If the issue is being seen in the UI, what browsers are you seeing the problem on?

Chrome

Logs

No response

Additional Notes

No response

[nichwall]

Have you edited the metadata precedence?
By default, the ABS metadata JSON file has the highest priority (this file is updated whenever the library item changes) so that changes you make within ABS have priority over any files.

https://www.audiobookshelf.org/guides/book-scanner#book-metadata-parsing

[Gru0810]

my scan-config is from the beginning like this:

and a change to "zzzTST" an a rescan inserted correcty the changed "TAG":

remove the TAG from OPF file did not remove the TAG in ABS

[nichwall]

Empty fields do not overwrite fields with data.

[Gru0810]

So I must delete the line "dc:tag</dc:tag>" not only the value?

[Gru0810]

change of TAG and rescan does correcty update TAG-value:

But also removing the whole line:

did not remove the TAG after rescan!

[advplyr]

This is related to and might be the same as #3649

I wrote up the problem here #3671 (comment)
and here #3649 (comment)