Mosaic app on Rossini auto-deletes a playlist. Recovery? Prevent recurrences?

Good day! I need some advice. I stream Tidal through the Mosaic app on my Rossini CDplayer/DAC. I save hundreds of titles on named playlists on the Mosaic (classical, jazz, etc). Twice the Mosaic app has spontaneously deleted my classical playlist while in use. Perhaps 400 selections are lost each time. I do not know how to move the named playlists from Tidal to repopulate the Mosaic playlist. Does anyone know how to accomplish this? Is anyone having similar experiences? Can these be prevented? As one may imagine, it is very frustrating. I was hoping to avoid adding an extra link in the music chain in the form of storage. Thanks for your consideration of my dilemma.