doReverseGeocode=false still consumes geocoding transactions.

I am passing a list of lat/long co-ordinates to my MapQuest Query URL to get the driving distances. I have specified doReverseGeocode=false and yet when I log into my Transaction report, it still says I have consumed a bunch of geocoding transactions in addition to the 1 direction trasnaction. Why is this?

Here is my URL:

http://open.mapquestapi.com/directions/v2/routematrix?key=KEY&doReverseGeocode=false&outFormat=xml&inFormat=json&json={locations:[{latLng:{lat:40.60344,lng:-79.56626}},{latLng:{lat:40.56538,lng:-75.51537}},{latLng:{lat:40.5213,lng:-78.39789}},{latLng:{lat:42.116,lng:-75.97567}},{latLng:{lat:41.1975,lng:-79.3905}},{latLng:{lat:41.119,lng:-78.76284}},{latLng:{lat:42.10965,lng:-76.81983}},{latLng:{lat:42.05533,lng:-80.08805}},{latLng:{lat:42.09069,lng:-79.23109}},{latLng:{lat:40.21428,lng:-76.99876}},{latLng:{lat:41.05558,lng:-80.35614}},{latLng:{lat:41.44721,lng:-74.43449}},{latLng:{lat:39.92629,lng:-75.17024}},{latLng:{lat:40.43623,lng:-79.96498}},{latLng:{lat:41.27487,lng:-75.87577}},{latLng:{lat:41.23162,lng:-77.00018}},{latLng:{lat:40.50311,lng:-78.40661}},{latLng:{lat:40.61271,lng:-75.53775}},{latLng:{lat:40.16152,lng:-79.54446}},{latLng:{lat:41.27487,lng:-75.87577}},{latLng:{lat:40.95874,lng:-76.91198}},{latLng:{lat:40.60186,lng:-75.39694}},{latLng:{lat:40.8542,lng:-77.57316}},{latLng:{lat:41.23935,lng:-80.46343}},{latLng:{lat:40.01131,lng:-75.25972}}],options: {allToAll: false}}