Swap shutters

I wish there was a function to swap ML shutters in Live.

For example, when mirroring a fixture, I might say: 202 Focus Beam Recall from 201. 202 Pan @ /-100. 

However I don't have a good way of swapping the B and D shutter thrust and and angles without globally changing the shutter order in Patch, which is usually not desirable.

It would be nice if there was a (macro-able) way to swap the angle and thrust of B and D shutters.

-Jacob