How to Merge Releases
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There are two cases in which you might need to merge two or more releases. They are handled differently, so please check either how to merge separate "discs" into one release or how to merge duplicate releases.
Duplicate releases
Sometimes two releases are just the same. You should always make sure that they are indeed the same, as for example two releases with different barcodes or formats are not duplicates and shouldn't be merged.
Multi-disc releases
Multi-disc releases should be entered as one release, but this was not always the case. This means you might encounter them split as several releases, one for each disc, named "Release Title (disc n)". To fix this, navigate to all the releases you want to merge