Invisible section cut that I can't delete

Missing sections of my building.
Sometimes when I open a project it looks as if there is an invisible section plane that I can move my building though and rotate though instead of moving the section plane thought the building. There is no visible sign that anything is there except
that things are cut away. How can I delete this?

Do a search for “clipping plane”. Very likely that’s what you’re seeing. Probably the easiest fix is to to set the camera to Perspective and hit zoom Extents. Also make sure you keep the model close to the origin.

Thanks DaveR your the man!

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