Thank you @MagaliP . Let me better explain how Excel Add-In is used in my organization. There are a number of workbooks shared among end-users, which are used periodically to extract info from Anaplan. Also, end-users might have their own workbooks for processing information as they feel comfortable with Excel. Those workbooks are created using Series 3. Besides the Anaplan extract worksheets, same workbook might also contain other worksheets to process the data extracted or just to give it a different layout, but directly referring Anaplan extracts. Therefore, once we upgrade the users to Version 4 they will still want to access all those workbooks created previously in Version 3. As you said, a conscious action to convert them will be needed, which is what I cannot guarantee that all workbooks are being converted, neither I have visibility on what is left unconverted. As a result, users with Version 4 installed on their computers will be trying to access workbooks with Version 3. Here is the real challenge. I am sure this challenge was already experienced by other organization, so would be great to know how others have overcame it.
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