Thank you for your post.
I just want to confirm that I understand what you are trying to do and what you are doing.
You want to map that contains both some LiDAR imagery and some Satellite imagery. You then export that map to a pdf or tiff and import it to Avenza Maps.
Then you want both raster layers to be present within the single file and the ability to turn one on and the other off.
If that’s correct, the easiest thing to do is actually import one map that is the LiDAR map and another map that is the Satellite imagery map, you can switch between them. Having a sort of Layers table for our raster images may be possible where they could overlay each other. I can file a feature request for this as well if you would like.