@Aartrace1 you have overridden the Camera property for the viewport which tells LayOut you aren't interested in the Camera property from the scene in the SketchUp Model. Note the Reset buttons and the dark gray background in the Camera section of the SketchUp Model panel.
Screenshot - 12_18_2024 , 10_26_41 AM.png

When you copy a viewport that has had scene proprties overridden the overrides get copied, too.

Best practice is to avoid overriding the Camera properties in LayOut. There should be no reason to double click into a viewport to pan the camera and no need to manually select a Standard view or manually tick the Ortho box.

@Dave-R Got it! Thanks Dave...it did seem like overkill to lock both the viewport and the layers, but it seemed like one of my viewports was shifting (even though camera positions weren't changed) and I thought maybe I had been double-clicking into the viewport(s) w/o realizing it. Still not sure what I did, but it seems to be working now.