The opening balance is a calculated one it is defined as the Initial balance + cleared deposits - Cleared payments.
Given this formula it should result in this number being the same as the last statement closing balance. If it is not it mean there is something wrong in the account. If it is just that a cleared status has been changed then that will be apparent when you do the next reconciliation, if it is something else there is a problem to find and correct. Without taking any action it would never be possible to reconcile the account i.e. arrive at the same balance as the bank has.