How to bake highpoly to specific lowpoly parts of mesh

Modelling done in Blender. Made lowpoly and highpoly. As you can see, I have lowpoly mesh with multiple separate objects: bat, nails, scissors, wire, handle, battery etc. On the highpoly I only have bat, handle, scissors handle, ducktape. How can I export whole lowpoly but only bake meshes which have their highpoly version ( in this case it is handle,bat, scissors and tape).