So I have an Excel Connector query of the PricebookEntry table, and I need to update some prices.  The problem is that when I run the update call, it looks like it is successful from the Excel Connector side, but the record does not actually get updated in Salesforce.  Any ideas what I could be doing wrong?  This should not be affected by 18 character Precebook Entry Id's, right?  

I am stumped.