What did you mean about a wrinkle in IBIS for cheching status ..
If you have a receipt notice, you know they have your case. True, they
might lose it once they have it, but that is not as common an event as
you might think (its actually pretty rare). If you have a computer,
have access to the reports they themselves put out that will tell you
your case has likely been given to an officer yet (IBIS wrinkle). Once
you determine that your case has likely been given to an officer, you
can calculate a realistic overdue date and contact them if the case