Thanks...I actually found out that my support file would not be picked up as document properties in Word...so-I went back and added all of those fields to the SharePoint content type and rebuilt the IP form...kind of had the same problem though with the date fields...here is a real gotcha-the Sharepoint date field comes across as simpleType...but allows dateTime formatting..but the value would not format...the value from the SharePoint list was like "11-15-2008 00:00:00"...hmmm...I tried picking off the first 10 chars...still no formatting (you got to have some formatting to use date in a Word doc!)...OK...last resort...I saw a reference that XML datetime strings need to have a "T" in between date and time...so I stuffed a "T" in there ("11-15-2008T00:00:00") and it worked!!!
Now the SharePoint List dates can be formatted in IP and used in the DIP! Here is the xpath from the Rule: (Pulling date for a Provider from a secondary ds named Provider Contacts into my Document Properties from the Content Type))
concat(substring(xdXDocument:GetDOM("Provider Contacts")/dfs:myFields/dfs:dataFields/dfs:Provider_Contacts/@Accreditation_Date[../@ID = xdXDocument:get-DOM()/pr:properties/p:properties/documentManagement/ns2:Provider], 1, 10), "T00:00:00")