When sublevel loaded: player movement doesn't work

Hi: I have tried to load in a landscape using the sublevel.

However when the sublevel is added through the levels tab, the camera moves to a different position, inside the main player (and the player no longer moves).
I’ve attached two images below to show what I mean.

(Also - in an opening sequence an object is detached from a socket and then physics simulation is set to active. Normally this object then drops to the floor, but on loading the sublevel - the suitcase disappears as soon as the object is detached from the socket.

Does anyone have any ideas on how to load the landscape in correctly?

Best,