When a transaction is copied the 'Cleared' field of the new transaction is not reset.
This is an annoyance when copying a bank or credit card transaction that has been cleared, particularly as one usually has 'Cleared' fields displayed only when viewing accounts.
Copying a transaction is supposed to save effort, so it should not be necessary to go to the account display to reset the 'Cleared' field! It can also be forgotten, so can cause some confusion when an account is reconciled at a later date.