How to move a mesh with baked lightmaps?

I need to bake the lightmap on a static mesh (a chair inside a room), and next to be able to move it around the room without loosing the lightmap.
Obviously the lighmap will be wrong, but it’s not a problem.
In Unity I’m just able to move any static mesh with baked lightmaps, but in UE4 when I move an object with baked lightmap it loose the coonection to the lightmap…

In an old post someone suggested to set the mesh “movable” and tick “Light as if static” under lightmass in the detail pannel, but I can’t find it.

Any help would be much appreciated!
Many thanks