I have the same problem.  I changed the name of my checking account in QBO and now I have 2 accounts!.....1 under the old name and 1 under the new name.  All is fine except my payroll and tax payments post to the OLD named account!  ugh.  I tried to merge the accounts but QBO won't let me because the acct is a default account.  Is there really no way to change payroll/tax entries to the new named account??  Will my chart of accounts now forever have 2 accounts lines for the same account? HELP