Thanks for coming by, @kdsllc1227-gmail.
I have some information about changing the invoice payment date. Currently, the opinion to edit the payment date is unavailable. QBSE invoicing is mainly used for creating invoices, sending them out to customers, and collecting payments. Thus, when recording payments it will use the actual date when you mark them as Paid in the program.
Learn more about it in this article: Manually track sales tax in QuickBooks Self-Employed.
In case you need help with other tasks in QBSE, browse this link here to go to our general topics with articles.
Drop a post anytime if you still have questions or clarifications with invoices. I'm more than willing to assist you. Take care and have a wonderful weekend.