Error in generating CUE, LOOPS and BEATGRID

I processed all the songs from a playlist generating CUE, LOOPS and Beatgrid and after reopening the RB, a few songs appeared as unprocessed in the playlist.

For all songs were manually adjusted the Beatgrid. Different CUE points were generated in memory. Active loops for all the songs were generated. Hotcue for all the songs were also generated.

All these information were lost after hours of work in RB 3.0.1.