Welcome to planDisney, Shimali!
I am so happy that you stopped by and even happier that you will be visiting the Most Magical Place on Earth very soon!
Shimali, if you move your
theme park ticket after you have made your
Disney Park Pass system reservations, your reservations will be canceled only for those days that you do not have a ticket for. The rest of your reservations will stay put.
To change your theme park ticket you can go into your
My Disney Experience Account and then under "My Plans" click on "Tickets & Memory Maker." Here you can scroll down to your assigned ticket and click "Change Ticket."
Don't forget that you will need to make new Disney Park Pass system reservations for your new dates. While the system will cancel your Disney Park Pass system reservation, it isn't instantaneous, so I recommend that you manually cancel your existing reservations once you change your ticket. This will allow you to make your new reservations as soon as possible.
I hope that this helped, Shimali! Please come back if we can answer any other questions for you!
See you real soon!
Sarah B.