Using Classic Outlook on Windows for personal email, calendar, and contact management
Kia ora Sneha
I set up a test recurring appointment, made some changes to some of it and then opened the entire series to make changes "from this point forward" as you suggested.
Unfortunately, I still get the same error message:
So whether I "end" one series and start a new one with changed details, or whether I open the whole series to make a change going forward, the specific history up to that point is deleted.
I looked at all 4 articles/posts you suggested and they don't add anything new to this, except that apparently the old Lotus Notes, as well as Google now, could do what Microsoft still can't seem to manage.
I will follow up with both Feedback and the UserVoice forum, because this same question in its various wordings has had hundreds of "I have the same question" votes going back to at least 2016. It's time for Microsoft to sort it out.
Ri