Some tracks cannot be analysed

Hi, i am new to rekordbox (serato user for many years) and transferring my database to rb but after analysed all my db i found that a lot of tracks are not analysed, instead of CUE is showing 0% if the CUE column and also there is no waveform in preview column. also all playlists that contains files that are not analysed cannot be sync to external USB. if i load any of those tracks in player is playing and also shows the waveform in deck but still not analysed. Any idea?

EDIT: i found that if i rename the track (just add a space or change 1 letter) and import it again then is analysed.

thanks