Since the diffuse/albedo map is just a diffuse map with no light information sure...? Unless you mean, bake down all of the information? You could do this too You could also take a look at the baked lighting utility in Substance Designer/Painter which isn't PBR but will give you a nicer looking result than all of the PBR…
sorry i should of been more clear, i mean like baking everything down and what are the best maps to bake into the diffuse? im so used to working in pbr that i am finding it hard to do it
What you want to bake in depends greatly on what the target Shader does. Assuming we're looking at a phong with diffuse, spec and normal it'll help to multiply the ao map gently over the top of the albedo and add a gentle highlight to anything that pokes out - you can derive that from height if you have it or ao if you…