Fix Match

[ThatDeltaGuy]

Pre-flight

• I searched existing issues and this isn't a duplicate
• I checked the roadmap and this isn't already planned

Problem

Currently the importer is matching files to the wrong books, for instance:

Proposed solution

I would like the ability to, for each file, change what book it is 'attached' to. An extra button next to 'exclude' that lets you select a new book would be good.

Alternatives considered

No response

Additional context

No response