Thank you @LieraMarie_A for confirming that QB Desktop just cannot use the default "Job Description" field in the invoices. That allows me to focus on alternative ways to get the results that i need.
So far it seems my options are either: I create a custom field for "Job description", or use the Account# for my project number and use the Job name as the Job description.
I still think that option #2 is a better solution as option #1 may lead to data entry mistakes since it's kind of confusing.
Thanks again for the help.
