Include background layer when generating frames?
How can I include the background in each frame generated by Make Frames From Layers in the timeline?

I'm working on animation art for a game, this workflow is close but I'm missing something. The goal is to produce png's for each frame of the animation
- Start with a layer for background and a layer for the subject
- Duplicate subject layer, hand-craft the awesome next frame of animation
- Repeat #2 for all the frames needed to be awesome
- Make Frames From Layers
- Select each frame, make visible the background
- Play the animation, observe opportunities to be even more awesome
- Trash all the frames
- Edit layers, repeat 4-7 as required until greatness emerges
- Export layers as .png
It's all just fine except #5, tedious with only a few frames and now I've stopped to type this because my current sprite requires 16 frames. How can I include the background in each frame?
Thanks!
