Using Classic Outlook on Windows for personal email, calendar, and contact management
No, what you suggest still causes all past appointments to reset. If it worked this way, then I never would have started this discussion to begin with. Changing the End Date at all causes the entire series to reset from the beginning. For example, if you had instances you deleted or made adjustments to in the past, it will add back or reset those instances to match the newly saved Recurring appointment. That Outlook does this is the very reason we're having this discussion to begin with.