AX2012 - AIF and CustTable Party field

Hi,

Why, when I look at the CustTable the Party field is a RecId referencing the DirParty table but when I ouput the CustTable using an AIF service, the Party field is a 1-4 digit number like on this page: http://msdn.microsoft.com/en-gb/library/aa856184.aspx

I'm trying to set-up a relationship in an AIF Service Query to use the DirPartyPostalAddressView based upon the Party field, I can see this View and Fields in my Schema once I have updated the query but when I process a document in the AIF Queue, the View and Fields are not there, I have also enabled them in the document data policies.