Moved music library not current on internal drive but fine on external drive.

I moved the music library from my old Catalina iMac to a new Ventura MacBookPro.

When I launch the Music app with the music.library and all the files on an external drive - it opens in the most recent and up to date state. Everything is cool as expected :)

However when I copy the same files and music.library to my internal drive the music.app opens in the state it was back in 2021 - with no files or playlists added since then appearing.

Not cool :(

Works perfectly on an external drive

Copy the correct Music iTunes folders and the music.library file to an external drive.
Open Music app while holding Option key and select the music library file that is still on the external drive.
Music app opens and contains all the music and playlists in the correct and up to date state.

Not good when copied to internal drive

Copy everything on the external drive over to the internal drive.
Launch the Music app while holding the Option key.
Select the exact same music.library file that was previously on the external drive.
When the app launches the music library is in an old state with nothing I have added since 2021 appearing.

In the screenshots you can see the same file in two different places:

INTERNAL DRIVE