Different versions same album

Whenever i add 2 versions of the same album from tidal into my library i find one album will display the date added and the other won’t unless i click on “add to library” then the date added is suddenly shown. I find this aspect quite confusing so can anyone explain why i’m encountering this? Many thanks. Adding different versions of one album to my library is becoming very confusing. One album might be a deluxe edition the other a remaster for eg.