Hi Suresh...
When you create a Publish feature, you're pre-selecting all the references and gathering them up inside that feature. Later when you're copying geometry, you just pick up the entire Publish feature and everything comes along automatically. Inside the Copy Geometry dashboard, there's a button (already selected by default) that only allows you to choose publish features. If there are ADDITIONAL references, you need to turn off that option before Wildfire will let you pick those references. I don't have WF4 installed anymore or I'd take a screen shot for you.
Look for a little "bullseye" target button on the dashboard. Hover over it and you'll be able to find it and deselect the publish geometry button.
Also... dependinf upon how you're copying your references, you may receive the error about the target part. For example, using a Copy Geometry feature, you must stay within the target part you're working on. If the datum points are contained within another model, you won't be able to select them. Each copy geometry feature can only reference geometry from one part. However, a Shrinkwrap feature can collect references from multiple parts. There are tradeoffs to each method because Shrinkwrap brings it's own idiosyncrasies that may or may not be desirable depending upon your situation.
I know that's a bit thin... but maybe it helps? If you're still stuck, please write back. I know we have several top-down design experts here.
Thanks!
-Brian
