Sage Construction & Real Estate

I have several open invoices from prior years that are also related to jobs that are now closed. How do I delete or void these so that they no longer show on my open invoice register? I cannot enter a credit memo to zero them out because the job is closed…

We have a big job and have outsourced some of the work. We just received the bill from the consultant who did the work, they have broken up the work by person and hours. I'd like to have the people and hours appear on our invoice to the end client, just…