Error modifying an agreement and then adding the signature fields back in when it has been delegated

This seems to be a new issue as I have previously done this without any issues until recently. I have sent an agreement for signature, and it has been delegated on from the initial contact person. I then make changes and modify the agreement and am able to upload the revised document to the system without any issues. However, when I try and add in the signatory box for the company the agreement is for followed by the signatory box for my company, I receive an error message saying that I have more signature boxes to add. This is not correct - I only need 1 signature from the other company, followed by the 1 signature from mine. Any of the people that it was sent to or delegated on to can sign for the first signature - I shouldn't need to input signature boxes for all of them. This seems to be a new problem - I've been modifying agreements for years for agreements that have already been delegated but not yet signed. Any idea if a setting now needs changing/how to get past this issue without having to re-send from scratch?