CRM 4.0 - Different Quote ID got inserted while Revising the Quote from Closed Quote if another quote in draft mode is available

Hi all,

I am using CRM 4.0. What i observered is, when i click on Revise Quote from Closed Quote and if another revised quote already available, then it inserts new Quote ID in the new Quote.

For Example: I have two quotes with same quote id "QUO-01001-L3D0Q7" with revision id=0 and 1. Now when i revise the closed quote(with revision id=0), its inserting new quote with different quote id i.e. "QUO-02301-M3DJQ7".

When i checked this in CRM 2011, it's not allowing me and gives me exception message that, "Quote cannot be revised as there already exists another quote in Draft/Active state and with same quote number".

So was it bug in CRM 4.0? Any rollups came for CRM 4.0 to fix that?