Hi David, DvD
Welcome to the MYOB Community Forum.
A "new idea" already exists for what you have proposed on this link Sales and Purchases Registers - Job Numbers. Its present status at "Clarification needed" and not going anywhere with 11 votes because there has been no reply to what Dale from MYOB Development wrote on 13/5/2013 which was:-
"...
Because a sale can have multiple jobs and each line could potentially be allocated to a different job it would be difficult to show in the Sales Register. I guess one possibility would be to show a comma separated list of every job on a sale? but this may get quite large. I would be interested to hear what others think?
..."
Perhaps you could respond to his question by way of comment and add your vote to that "new idea"
Thank you