Bug 3.6.1 - Selecting/Merging

I found something tonight that was causing me grief. Not sure if it goes back further, but don't remember seeing it before.

Select fixtures with the GROUP window buttons..
Press MERGE
Press an existing GROUP window button...

It creates COPIES of the first tiles. I would have to use the command line to select multiple fixtures to merge into an existing Group.

Ex.
I have a row of group buttons for "ALL LEKOS" "LEKO 1" "LEKO 2" "LEKO 3" "LEKO 4" - call it groups 1-5
Have a group button labelled "Podium" that has Leko 1 in it currently - call it group 11
Designer decides he wants to add Leko 3 and 4 to the group.
Press group button 4 and 5 MERGE then Group Button 11...
It then creates "COPIES" of group 3 and 4 next to group 11.