Okay, I have a really strange issue going on. I have checked in an assembly with a part that has replaced another part. When I look at Windchill structure, CAD structure or the CAD in CREO, everything looks good. However when I open the viewable, it still shows the old part and part number. I am on CREO 2 m050 and WC 10.1 m040. I did not setup the publishing and have been trying to crash course on it, but am not getting anywhere with this.