Thanks. I copied everything from the musicbee folder on the old computer into the muscibee folder on the new computer, incl the backed up settings and library backup. In the main music screen the setup is as previously and the artwork has been preserved but all the playcounts and last played data are missing. All playcounts are at zero.
For the playlists, they are all listed but the songs in each playlist are still pointing to the location on the old computer and so there are no album names, times, genres, playcounts, etc.
I should also add that I pointed MB to the new location of the library but when I opened MB it said all the files could not be found as it was looking at the old location. It asked me if I wanted to remove the old tracks from the library, which I did. I then scanned the folders for new files. It imported the correct files, with correct artwork, genres, etc but, as I say, no playcount or last played date. Is there some file I need to be copying over that contains this info?