I've been playing with the Discogs plugin Update From functionality, but have found it not very functional. It appears to search on the field Catalog No, however this value is not unique on Discogs. Many releases have the same Catalog No, so it retrieves incorrect results.
It would seem that the plugin accuracy could be greatly improved if it used the "release_id" field on Discogs instead, as that is unique and guaranteed to return the correct information.
For context, I've exported my Discogs Collection via CSV, which is somewhat lacking in details. I've Imported it into CDPedia, and would like to now go sync all my entries back with Discogs to pull the remaining information that Discogs doesn't export. I always have the "release_id" from Discogs.
Or could you provide the source code for your Discogs plugin, and I could make a modified version? I've played with the sample.plugin, but implementing the Discogs calls, without an example set of calls to start with, is a bit beyond my abilities. But editing the existing one should be fairly straightforward.
Thanks,
Cory