Some Objects dont Appear in Camera View

Hi,

Probably a very simple fix, but I am creating a complex scene in 3d space. In my perspective view, everything looks fine and in place. When I switch to my camera (camera peg). There are several objects missing, or appear in front of other objects. And the objects that jump in front are clearly behind in my “top” views. Any reasons why this can be happening?
Thanks in advance

Z-Position information can sometimes be passed along from the composite modules through the port with the dot. Try setting the composite module to “Pass Through”