View XMP file information of placed jpg

Question

Hi,
I have several JPG images with IPTC information placed in an InDesign document. The problem is, the IPTC information is not available through the panel information > file information of InDesign. The menu item is disabled. And it is also not available through scripting.
If I open the placed image in Photoshop and save it again, everything is fine.
I assume that the XMP information of the image got currupted somewhere along in our workflow. How can that happen ?
Thanks Stefan

Answer 1

And here is a more simple example — writes data to the history panel from ID to Thumbnail in Bridge:
#target indesign
myDoc = app.activeDocument;
myFullname = myDoc.fullName;
myPageRange = pageRange();
var bt = new BridgeTalk; // create a new BridgeTalk message object
bt.target = "bridge"; // send this message to the Bridge application
myScript = 'var t = new Thumbnail (File ("' + myFullname + '")); var mdata = t.metadata; mdata.namespace = "http://ns.adobe.com/photoshop/1.0/"; mdata.History += ""Blah-blah-blah"\r"; mdata.Caption = "Pages. " + myPageRange;'
bt.body = myScript
bt.send();
function pageRange(){
  var myFirstPage =  myDoc.pages.firstItem();
  var myLastPage =  myDoc.pages.lastItem();
    if (myFirstPage == myLastPage){
        return myFirstPage.name;
    else {
        return myFirstPage.name + "–"  + myLastPage.name;