T-Stats Postal Code

I love using T-Stats for easy Pivot tables.  My go-to use is for Postal Codes and Geo Area.

Recently though I was doing a simple count for Zip Codes with a list of 108 constituents.  T-Stats only reported back 61???

I did look at the drop for the T-Stat element and clearly it did not have all the possible zip codes.  Is there a rountine "refresh" that supposed to be done so T-Stats can report back on the actual data?

Thanks