Updating XML and not seeing changes reflected

Question

We have a very basic xml that we are using to insert a field into the custom panel.  The file is as follows:
<?xml version="1.0"><!DOCTYPE panel SYSTEM "[http://ns.adobe.com/custompanels/1.0 | http://ns.adobe.com/custompanels/1.0]"><panel title="$$$/CustomPanels/Acro/PanelName=TestPanel" version="1" type="custom_panel">group(placement: place_column, spacing: gLargeSpace, horizontal: align_fill, vertical: align_top){   cluster(name: '$$$/CustomPanels/TestPanel/widgetName=Sample Document Type', placement: place_column, spacing: gSpace, horizontal: align_left, margin_height:10, width : 300, height : 50, child_vertical: align_left)  {
    popup(items: '$$$/CustomPanels/TestPanel/Language/PopupItems=One{1};Two{2};Three{3};Four{4};Five{5}', xmp_path: 'TestDocType');
</panel>
Everything appeared to be working correctly until we tried to modify the xml to add additional items.  The new items do not appear in the list when modifying the metadata.  Do these files get cached?  Is there another way we are supposed to be making these changes?

Answer 1

Yes, there is caching.
To force an update to the cache, either:
A) update the modifyDate = "..."  line in the manifest.xml.
OR
B) Exit all programs that use File Info, remove the target custom 
panel folder from "panels", launch one program, launch FIle Info. The 
exit the program, and place the target custom panel folder back into 
"panels".
Carl