I found some code here
http://support.microsoft.com/kb/209189 that looks at the file to see if it is open or not. I modified it a bit to see if the file is open, if not, open a new one, if yes, switch to the open version. Will test it on the reporting suite on Monday.
I am in Excel 2007 complicated by the CubeAnalysis add in and SAP BPC 7.0 (former OutlookSoft). The formula that "takes back" the user to the Menu is outlook soft formula that references the application, outlooksoft navigation menu and displayed message 'Back to the Menu". It would be hard to recreate the same behavior. Also, it is only recently that we switched to Excel 07. When we had Excel 03 we did not have the problem. I do not know how to compare the two versions (I have two machines with the old Excel 03 and Sap BPC 05 and new Excel 07 and BPC 07 so I could compare if I knew how). I looked at general Excel options and they look the same. I looked behind the scenes - whatever little VBA we have there is the same in both versions. There is an add in Project there Ex4excel.xla (if I remember correctly now) that's password protected. Not sure what it does or how to get in.
I think my little solution will work on Monday. I will replace the outlook formula in all templates with the macro to see if the Menu is already open, if not, open a new one, if yes, refer to the open one.
As always, your questions help me think in the right direction. Thank you!