Jcorderi - My payroll is processing fine, just shows that there are check modified. All amounts paid tie to the current payroll. The audit trail shows no changes in dollar amounts on modified checks. I called QB help and was told this time that the issue was that when QB Payroll updates, it will retroactively apply tax updates to completed payrolls if there were updates to those payroll periods and that the dollar amounts should not be changed. I was told to make sure I run updates before processing every payroll. In the end I have done that, still get the message stating that paychecks have been modified, but my payroll balances.