Shopping cart sourcing process in SRM 7.0

Hi gurus

I want to run a sourcing process in Classic scenario but my question is if it is possible.

1. Requester creates an SC XX to order a service

2. The SC goes to Purchasers worklist for sourcing

3. The Purchaser make an Rfx with data from the SC to different vendors

4. The vendors log in to create response to the RFx

5. The Purchaser select the best offer and creates a contract

Now the question is in the following process.

6. Is it possible for the Purchaser to assign the contract to the original SC XX that was created?

7. The SC is transferred to backend to create a PO

Hope someone can help me in this issue

Thanks