Thanks for dropping by on the Community, andreamarieclayt
There's no limit to how far you can backdate your books, when entering a new transaction simply click on the calendar icon in the date field to change this or manually type in the desired date. 👩💻
We've got a host of upcoming and on-demand webinars that you can access here as well as a YouTube channel with video tutorials.
If you've already been paid for the invoice, you can instead manually record the sale using a sales receipt, or add the payment directly from your bank account.