How to install a new IDR and back out an old IDR at the same time

Going from SRU 12.0.5 with idr 793 to SRU 17.5 with idr1041

pkg -R /zones/myzone/root list |grep idr

Now install the new IDR will specifying to back-out the old IDR at the same time

pkg -R /zones/myzone/root install --accept --reject pkg://solaris/idr793@1,5.11 -g file:///var/tmp/idr1041.2.p5p -g http://10.10.10.11:11000/solaris/ pkg:/entire@0.5.11-0.175.1.17.0.5.0 idr1041