Analysis workbooks become slow to open  in Excel

Gurus,
I am seeing a pattern in our use of Analysis by our users.
As they create, edit, etc...the workbook gets slower and slower to open.
I have one that takes 10s of minutes to open when Analysis plugin is loaded vs. seconds when just Excel.
Digging around the interweb, I found a tool to scan the workbook for Styles.  Turns out, all these workbooks have thousands of styles.
I purge them using this tool and all is well.
Seems to be a common issue with Excel, but our users in all their years of using Bex never had this problem, so now they see Analysis as having an issue Bex did not.
Is this a known issue in Analysis?  Anyone else seen this?  We are using 1.4.7.3073.
thanks
jim

Hi James,
We had the same issue it usually happens when users copy sheets into their
workbooks,  as pointed out by Tammy
This add in did the trick for us
Remove Styles - Download: RemoveStyles.xlam for Excel 2007 and newer

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