Pre-Delinquent letters for All invoices

Hi

I have setup Staged Dunning Plans for the all of our Customer letters that are delinquent, becasue we want them to get a series of letters with gaps. But I also want to have every pre delinquent Invoice get a Letter (email) once it is -2 days before the due date.

I have set this plan up with a plan based on overdue method, I run the Engine for 11 the predelinquent score, and my aged bucket just contains 2 lines Current = -9999 to -3, and Predelinquent = -2 to -2

But this does not seem to be picking up any customers as predelinquent