Miscellaneous topics that do not fit into specific categories.
Hi, I'm John!
In most cases, when you upgrade before your renewal date, Microsoft automatically converts the remaining time on your old subscription into credit and applies it to your new plan. So those unused months are usually not lost.
To check this, please sign in to your Microsoft account > Services & Subscriptions https://account.microsoft.com/services then look at your current plan’s next billing date. That will show if the credit was applied.
Do you see any extended renewal date on your account?
Click "Add comment" to let me know.
Regards,
John J.D.