A family of Microsoft word processing software products for creating web, email, and print documents.
Are you using VSTO?
I was not sure whether you are saying
a. "In the past I have been able to map XLS data in Word and now I would like to do the same thing with XML data" or
b. I have mapped some XLS data in Word but it originates from XML data - how do I update it?
If it is (b), how have you mapped the XLS data and why would you expect to be able to refresh the data without refreshing the XLS?
If it is (a), then the problem is that there is no equivalent of the Excel XML mapping process in Word. There are several things you could do - probably the simplest would be along the following lines:
a. use Word content controls mapped to a Custom XML Part to insert the data in Word
b. Use VBA (or whatever) to get the data you need from the external XML and copy it into the Custom XML Part
c. either rely on Word's Custom XML events to update the content control values or force them to refresh their data - at this point I do not know whether the "events" approach is workable
Another approach might be to use INCLUDETEXT fields to insert the appropriate data from your XML source using a piece of XPath to identify the appropriate nodes. This is only really "simple" in the case where you are inserting the values of easily-identified individual elements or attributes in various parts of your document, cf. inserting links to different Excel cells. If you need more than that, it gets much harder as you would need to write some XSL transforms