Backup on Windows, restore on Mac = No grids, art, or waveform previews

Using Rekordbox 7.0.2, I performed a full library backup on a Windows 11 machine in order to transfer to a Macbook Pro. After the restore completed on the Macbook, my library and playists were available, but all beat grids, album art, and waveform previews were gone.

For the fun of it, I re-analyzed the entire library on the Macbook, which regenerated the previews, but did nothing for the art and of course generated all new beat grids that have to be re-corrected where necessary.

When doing a cross-platform backup/restore, is there an extra step I need to take to make sure the backup/restore is complete and includes my grids/art/waveforms?