Bake reflections with MR

Hello!
Scanline bakes reflections from camera view. And it does it very well. I mean 
if you have reflected material which you bake with scanline from your 
selected camera, then in baked texture all reflections are baked right relative

to your camera.
But MR can't bakes reflection material right at all. Just do the test - 
reflective plane and a box above. And try to bake the plane. MR does not bake 
box reflection into texture. Or if MR bake reflection, it does it wrong.
Some people adviced me to write my own shader to bake reflection with MR, but 
I can't do it, I'm not coder.
Any tips on baling reflections with MR? Help me please!