If a client submits a counterproposal, how should they sign the documents?

When a client submits a counterproposal, it is essential for them to sign the counterproposal itself to indicate their acceptance of the modified terms or conditions being proposed. The counterproposal is a new offer that effectively nullifies the original proposal, and the signature serves as a formal acknowledgment and acceptance of the changes made in that counterproposal.

This means that the signature on the counterproposal signifies that the client agrees to the terms outlined therein. Although the original contract may remain relevant for context, it is the counterproposal that requires their signature to move forward in the negotiation process. Signing only the counterproposal solidifies it as a valid and binding offer to the other party.