Yes, you can enter earlier transactions manually, urbeancounter7. You just need to make sure the transaction details are correct (such as dates, item details, terms, and etc.).
- Click the Create (+) menu at the top.
- Select the transaction type (Invoice, Sales Receipt, and etc.) you want to enter for your client.
- Enter the transaction details.
- Click Save and close.
Let me know if you need anything else. Have a great day!