Deleting Construction Billing invoices after printing but before posting

Client has a couple of contract billing invoices. The first ones printed fine, posted fine, but upon review, did not have the correct amounts. They used Invoice Inquiry/Reversal to reverse those transactions. They then rebilled the projects, and the invoices printed, but did not post. On inspection, the reversal invoices from "Step 2" did not post either, so I have a three reversals and rebills sitting out there. The project show fully billed out (I'm assuming because the reversals didn't post).I figure this is perhaps part of the problem.