Adding playlist content to library

I’ve a single album / artist playlist (i.e. just the album with 11 tracks). I want to add this to my library and delete the playlist. I select all of the tracks in the playlist, then use the ‘Add to Library’ option from the three dots menu on the RHS (the three dots appear under every track).
I thought that this would add all of the selected tracks to my library, however only the track that I clicked the three dots option against gats transferred. Not all 11 tracks. I’ve double checked to make sure every track has the tick box marked.
Am I doing something wrong ?

In the playlist, click on 3 dot menu to go to the album page, click the + sign to add album to library.

That is what I do.

In many cases (but I am not sure if in this case and can’t check right now), after selecting several tracks there are two options, which is a bit confusing:

Select the menu to the right of one of the selected tracks, like you have done. Despite the multiselection, this affects only the one track whose menu you use.

But there is also an additional (…) menu at the top of the album page, and this applies to the whole multiselection.

At least this is how it is when you do things like edit tracks.

Nope !
I can go into a playlist (for this purpose it’s just an album with several tracks), select them all.
If I use the 3 dots menu to the rhs of the tracks only the track that I click the menu against will give me the option of adding to Library.
If, when I have selected all of the tracks, I use the larger 3 dot menu at the top rhs of the album page then the add to Library option is greyed out.
The + sign (save a local copy) puts it heaven knows where . . .

Hmmm. I was referring to My Playlists, not ROON Playlists. Seems to work for the latter.
Does that seem right ?

Did you try my suggestion?

Yes but I think it’s the definition of Playlist that’s the issue. Your suggestion works for a Roon playlist ( unlikely to be a single album). But not for picking out multiple tracks from my own playlists . .

Click the three dots on the RHS, scroll down and you’ll see “Go to [name of album]” - click that and it’ll take you to the album where you can add it to your collection. You could also just click the album title in the playlist.

Ah, starting from an individual track - seems to work.