When working in Accounts Receivable, if an invoice line item is not yet posted, it's possible to change the post date from the record.
1. In Records > Invoices > Open the invoice containing the line item with the incorrect post date. 2. Select the line items tab 3. Select the row with the correct line item and click open on the the gray bar 4. Edit the post date of the line item 5. Save and close the line item 6. Save and close the invoice