How do I enter invoice or treatment items for past dates?

Entering treatment items for past dates involves the following broad steps:

• Add the items to an open treatment plan and change the service date of the item.
  See How do I change the service date on treatment items?
• Edit the invoice date.
  See How do I change the date of an invoice?
• If applicable, close the invoice, enter a payment, and edit the payment history so the payment deposit date is accurate.
  See How do I change the deposit date on payments?

Users entering treatment items for prior dates must have the appropriate permissions to alter invoice dates and edit payment history.

See What employee rights allow edits to invoice dates or payment deposit dates?