I have a VSTO word add in that uploads documents to a document library on a SharePoint 2010 site. The document gets uploaded and the custom document properties which mirror the document library view columns indeed show the custom properties as uploaded. All well and good.
However, when I click the document on the list and launch word to edit the document, making changes to the document custom properties and uploading. These updated custom properties are not reflected on that document item.
I can see the properties that I modified from within Word/File/Info, but not on the updated list item.