Sage Construction & Real Estate

I have retainage owed to a subcontractor, and now given a backcharge against their contract, which zero's out what I would have paid them in retainage. How do I make it disapear from the payment selection. I've tried to print a zero $ check, but Sage…

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…