i founfd out that Mediaportal automaticaly reorganizes the musik database every day at 00:00h.
In the configuration there ist nothing marked that might cause that.
When MePo does that, all favourites are reset as well as all all music-ratings. (All iFavorite entries are 0 and all iRating...
Whenever I upgrade to a newer version of Mediaportal it seems to remove any custom keys added, for instance have to re-add the custom AtmoLight keyboard shortcut even if I assign it to a non-existent shortcut key (screenshot below)
Think this is because the keymap xml is getting overwritten...