Scan loses track ids and paths

Hi,

I'm doing some custom play tracking based on track_ids from the LMS database. When I rescan (no wipecache) from the cli I end up with some urls not being found for a given track_id. Artist information etc is found, though.

Are ids supposed to remain the same for unchanged tracks? Or shouldn't I rely on track_id's? If so, on what should I rely?

I'm running 7.7.3 on raspberry pi.

Thanks and Cheers,
ugh_bough