BDMV playback jumping to different files

Hi all

Has anyone encountered a situation where during playback of 4k backup in AVCHD structure, Infuse suddenly stops playing the current movie and plays totally different movie? Or in one case, Infuse jumps to the title screen of the movie ifself.

I had this happen across a few AVCHD folders. I have checked that the folder structures are fine as per another thread in this forum.

If anyone has any idea or have encountered this situation before and has a fix it would be much appreciated.

E