Camera tracks CraneCameraMount in sequencer but not on playback in-game


I’ve created a fairly simple Sequence with just one shot using a camera rig. The sequence plays fine in Sequencer, but when I play it in-game (via Level Sequence Player > Play in the Level Blueprint) the attached camera doesn’t follow the CraneCameraMount - it stays at the origin of the crane. the camera rotates as expected but it doesn’t move with the crane as it does when played via Sequencer.

Any ideas what could have happened here?
I’ve had other cranes working in the past and I’m loathe to just remake this one as it’s taken me all morning to make it look right.

Any help would be most welcome