Hi Sujin - Welcome to the Atlassian Community!
That sounds like a bug to me, but I don't use the Server version.
You can report it here:
Or if it is working as intended, then maybe create an automation rule that copies over the Watchers when an issue is moved.
Background When you hear the words ‘Release notes’, almost always you think of an unsolicited email from a software vendor. But I am here to tell you that from our data, sending release notes via E...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events