This is not ‘other version’ but compositions. If for a track the composer(s) is(are) missing, it doesn’t count as composition (missing icon), because of the lack of metadata to identify it as a such. If composers for a given song mismatch between two publications, you end up with two compositions instead of one.
If you want to fix it, you have to provide/correct the metadata for every occurrence of a song, either manually or by providing feedback to the metadata provider.
From How to report metadata issues:
Submitting Corrections To AllMusic
One of Roon’s metadata providers is the same provider that is used by AllMusic (but note that AllMusic metadata is often limited to US releases). If you notice that an issue in Roon is also on AllMusic, you can submit a correction directly on the album’s AllMusic page.
Please note that this doesn’t automatically reflect in Roon. If your correction is accepted it will take about a week or two before you’d see this change in Roon. If you’re still seeing an issue after something has been corrected on AllMusic feel free to reach out to us!
