I would like to use the Owners Investment Account to pay invoices. How do I post this?

Hi michael-melangef, 

Welcome back to the Community. Recording your transactions properly is an essential step for maintaining clean books. QuickBooks is a powerful program that enables you to enter your transactions without any hassle. 

Based on what you've described, I recommend reaching out to an accounting professional for expert advice on how to post the transactions. If you're not in contact with a professional, don't worry, you can search for one using this link here. In the meantime, I recommend recording the sale using a sales receipt. 

I'll also leave this question open in the Community so other accountant users can share their advice. Otherwise, feel free to ask other questions, I've got your back.