Multi State Taxation

We run payroll in several States.  We are constantly running into issues with back time being processed from Job Cost/Time Entry that cause negative entries in year to dates.  The tax state is determined by the Job being processed thru Time Entry - so sometimes the wrong state is setup on the job and they do reversing entries to fix, then there are they over/under pymts entered.  When these adjustments get pulled thru payroll the excludable is often different then when the original entries were processed so the result ends up to be a negative.  These negatives reflect on the Tax Integrity report and need to be corrected - but we're ending