The problem here is that WAV files don’t have file tags.
iTunes can tell Roon about your playlists, but my guess is that all the metadata you’re seeing in iTunes isn’t actually stored in the files that Roon is importing – it’s stored in the iTunes database.
This is one of the reasons many people opt for FLAC or ALAC files, which both have full support for file tags. When you edit those file formats in iTunes, the information is generally written back into the files – since WAV files don’t generally support file tags, there’s no where for the info to be written to, and it just stays in the iTunes database.
All of that said, file tags aren’t the only way that Roon can identify albums. We also look at folder structure and file numbering.
So, if you have 5 WAV files numbered in a folder as 1 - So What.WAV and 2 - Freddie Freeloader and so on, we will generally recognize that album as Miles Davis’ Kind Of Blue, even though there are no file tags. But, that requires that all the tracks on that album are in a single folder, and are numbered in a way that Roon understands.
A clearer sense of how your files are organized and named on your hard drive would help us understand why these albums aren’t working – feel free to post some screenshots (instructions at the end of this post) of how the files are stored and we’ll see if we can help.
Another option would be to look into converting these files to a format that supports tagging – as you might guess, our identification process does a lot better when we have information about the files.