HR Org Structure into an existing manaully created SRM Org structure

Hi,

SRM 5.0, Classic Scenario

1) SRM Org. structure exists and users are using it for Company Code A.

2) Now I have to replicate the HR data from R/3

3) Can I create a NEW root node and replicate the HR data from R/3 (including Company code A users.....this group of users will be using this NEW structure later) ?

Is it possible ?

-Regrads,

Pranav