How to add and print a 1099-MISC for a recipient not included in eFiling submission

A client has processed 1099 eFiling, then found a vendor who had been missed in the run. On the 1099 History File Options page, selecting "Correct Completed 1099s" displays the table of recipients already submitted and does not include the additional vendor.

The vendor information has been updated in AP with the 1099 amount for 2015 - can this be pulled into the Aatrix data or must it be typed on an additional line?

When manually entered in the data table and all reviewsteps have been completed, Aatrix displays the printing/filing forms with all vendors, including those previously filed. Is this the only way to process the additional entry, or can just the information for the single 1099 be submitted?