1. In General Ledger, Configuration, click Business Rules
  2. Select Transactions from the left-hand list
  3. Unmark the second checkbox option, "Do not allow post dates to be different than transaction dates in other Blackbaud systems"
  4. Return to Accounts Payable and select Tools, Options from the main menu
  5. On the Records tab, highlight Invoice activity on the left-hand side
  6. The Default post date can now be edited