Hm weird, Robert @RCooperArt ,
My first idea would be that it’s using a Local Camera:

Here the Cube is used for Rendering.
But Set Active Object as Camera should fix that (and it seems to have done that for you), but why does it jump back, when hitting Render???
Maybe it’s because of Keyframes, but they are on the Console, not on the Camera…
Try disabling the Local Camera checkbox manually (at Frame 1, just to be sure) and see what happens…
If the problem persists, feel free to upload your .blend file (to Dropbox, Googledrive, or so) and post a link here.