Is it possible to create a new negotiation round for specific items or suppliers only?

We would like to know if Oracle Procurement Sourcing supports creating a new negotiation round for specific items or suppliers only.

Currently, when a new round is opened, the system includes all items and suppliers from the original negotiation. Buyers cannot reopen a round for one supplier or item without restarting everything.

The goal is to renegotiate better prices or terms with one supplier for one item only, without reopening the full negotiation.

Is there any existing setup or workaround to support this behavior?