Refresh data set from Excel Table - Drill-down field in visual not changed

After searching the community posts, I could not find a solution to this issue. It seems simple, but maybe not.  I am in Desktop BI where I have three tables; two are related and the third is independent and used for different time frame from first data set.  When I drill down in a visual I see that one field has an old Note term (e.g. "Top Six Sal Adj") and it should say just "Salary Adj."  So, I went back to my Excel table (9K records) and using drop-down on the Note field and found the Top Six Sal Adj line; then changed it to just "Salary Adj;" then saved the Excel.  Then in BI Desktop I have the same report page open as before and the visual is active showing Drill-down with "Top Six Sal Adj", and I click Refresh. All the sources are shown refreshing. But ... the Top Six Sal Adj note remains in my visual drill-down even though I changed it in my source Excel table.  Does this issue have anything to do with the fact that I am using Drill Down (hierarchy)??  Thanks for any help on this.  Jeff