edit lightmaps in external application (photoshop)

Hello,

Is it possible to export the baked lightmap for an object and edit it in other application like photoshop. I don’t want to rebuild the entire level just because an object was not baked correctly.
From what I found out, Unity exports .exr files that have the baked information.
It would be very convenient if such option existed in Unreal.

Thank you.

Nope, they are not editable.