If I have understood your problem correctly, you unfortunately appear to have encountered a known Roon bug; an identified album which lacks composers on some but not all tracks will not allow you to edit compositions on those tracks. See A long thread here.
To force Roon to unidentify your album you can first edit, identify and then tell Roon none of these on both following pages. It should then use your own metadata, (but you won’t get the review). (I would have thought Prefer File Data would have sufficed though)
Brian