Master Sequence & Camera rig rail


I have a problem with Camera Rig Rail if I use a Sequence for master with shot tracks. When I make a sequence and use a Camera attached to a Rig Rail it works fine.
But when I put this sequence in a shot track in a Master Sequence it loose the connection between the camera and the Rig Rail. It’s same with Rig Crane too.

Any idea?

It is very easy for attachments to become disconnected and unfortunately, the sequencer doesn’t indicate when that happens, unlike the regular tracks when you change a level and it loses the link.
It’s best to go through the camera attach tracks and paths and make sure they are valid by checking their properties. (Wish UE was smarter here)
Also, make sure to go through your shots/cuts and check that the assigned cameras are correct by check their properties.