Co. A is 100% owned by Able
Co. B is 100% owned by Baker
Co. C is 50% owned by Able and 50% owned by Baker.
Is it true that A&C are in the same controlled group and B&C are in the same controlled group, but that A and B are not in the same controlled group?
If Co.s A and B should merge into C, retroactive to mid-year 2007, what effect would this have on testing?