Ok, this is maddening.  I have 3 QB files (2017).  two for businesses and 1 for personal accounts.  no issue on the company files but my personalchecking and savings accounts have the same problem every month.  I reconcile...and to do so I have to make an adjustment by adding in a bank fee because the now states opening balance is NOT what I reconciled to the last month.  So I make the adjustment for the current month, get this month to balance to the correct ending balance per my bank statement and then when I go to reconcile the next month, the opening balance IS NOT the same number as what I reconciled to the prior month!!!  the numbers are small and fairly irrelevant, however maddening that this keeps happening.  Help????!!!