Ability to move/rotate a whole room

The other day I realized that my recreation of a sewer map was off in one section by 1 square. I see that mass selection and movement of objects was already requested but being able to move a whole room would be really nice.

The map I have will suffice for personal use but if I am asked to make a recreation for a 3rd party it would be nightmare to redo that whole section as I had to jury rig a solution for something else that was lacking in the application.