In-Place cutout for 2 walls

[dhurtubise]

I need to do some kind of corner window. I used an embedded curtain wall to do so. I added an in-place family to get rid of the not cut part of the host wall and then use the cut geometry. I don't seem to be able to re-use the same mass to cut the second. Any idea
I can still copy past same place but i would prefer use the same.
Thanks