I am having the same issue with QuickBooks Online.  In the chart of accounts and registers, I'm showing a zero balance for our Euro account, however on the Balance Sheet and Trial Balance, I'm showing a balance of €41,000.  I've closed the bank account, made the QuickBooks account inactive, but it's still showing up on our Balance Sheet, which is not accurate.  I cannot present our financial statements to my boss like this.  Has anyone figured out how to fix this issue and get the balance to show zero on the Balance Sheet?