Adding simple Background issue

On this project, I’m drawing the backgrounds on another program and simply importing them to the scene. Because its the background, the layer is at the bottom under all the animation. But when I import it appears above all the other layers in the camera window even though its at the bottom. It seems like its under the animation when I scrub through the timeline but not when I play it.

This is frustrating because it seemed so simple before hand. Put image under everything to have it behind everything. But nope.