What is Min Lightmap Resolution?

Hi Tim, thanks for your reply.

So this means I can lightbake a static mesh with, let’s say a 512 res and afterwards create a 64 res from that, just for my LOD02, all without affecting the baked texture, or the need to rebuild the lighting?

If so, does it only happen on pressing the “Apply Changes” button, or as well on pressing “Save”?

thanks!