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An error occurred while saving the commentJohn Mitchell commented
If this feature is added, it should be turned off by default. I write Excel add-ins and I have a user base of 1000+ managers/directors/VPs at a Fortune 500 company. Users often make speculative changes to their Excel workbooks to understand the effects of these changes on product schedules, and usually they do not want these changes saved.
Users expect a save to occur when they request that their changes are saved, and not otherwise.