Pagination in Sections

This is another challenge in our section vs. issue pubbing.

When we pubbed in sections, each section would start with page 1: A-1, B-1, etc.

I have the starting page number set to 1 for each of the sections, but I'm getting continuous folios: A1-A10, B11-B12, etc. 

How do I set the pagenum macro so it will grab the starting page number for the section?