SRM upgrade from SRM 3.0 to SRM 7.0

Hi SRM gurus,

I am working in an Technical upgrade project for a telecom company from SRM 3.0 to SRM 7.0.

Apart from the business process testing what are the other aspects to focus on?

in SRM 3.0 vendor and root org are in the same node whereas in SRM 5.0 it will be in separate vendor node and root org node.

For this SAP BASIS will run the report BBP_XPRA_ORGEH_TO_VENDOR_GROUP where in the root will be separated.

but in our client the Attributes are maintained in a separate Z table.. whether there will be any impact.

Please let us have your inputs

Regards

G.Ganesh Kumar