This would be really usefull, it is getting implemented?

Is there any plans on implementing this in the near future? The issue basically defeats the purpose of using full sync

Forgot I had started looking at this. Just got an implementation working for Sonarr and Radarr and opened a PR. I don't have instances available for the other apps.

Seems like a useful feature, but based on @bakerboy448 's comment in #1332 , I can't help but wonder if it's a better idea to preserve the existing tags on the app side vs syncing them over, as nice as a full sync might be. Currently on full sync the tags on the app side get deleted if there's an update, and that breaks my usual workflow of having per-indexer tags set per resource so I don't search for a non-anime piece of media on an anime-only indexer as an example.

Well from what I see in that PR, it would be a toggle on the Apps settings, maybe on top of the toggle it could also be that Prowlarr just doesn't override tags unless that toggle is on?

When option on => Sync tags from Prowlarr indexers to Apps indexers
When option off => Prowlarr doesn't touch tags in Apps indexers at all

Hmm... Good point. At the moment sync being off would default to overwriting indexers to have no tags. If the setting is off it should definitely leave them alone. That's a bug.

I'd be hesitant to have tag sync as append only. The full sync option in prowlarr is supposed to keep everything up to date AFAIK and having the setting only append then risks other future settings doing the same and "full sync" becomes far less effective. I would think if append only is wanted, the app would be set to add and remove only rather than full sync.

is there any update on this? happy I found this issue, I thought my prowlarr instance is buggy not syncing new tags.