Yes, you are right.
Due to it, we are planning upgrade to 2 7200 ( replacement of 6000 with SC1), but the problem is that 7200 come with Aruba OS 6.x (minimum) and our network run AOS 5.0.3.
So, the upgrade should be
1.- upgrade our network to 5.0.4.12.
2.- upgrade to 6.x, taking out our SC1 controllers.
3.- install the new 7200 with 6.x