While moving an issue from one project A to another Project B the sprint name also got renamed

[Sankalita Sengupta]

While moving an issue from one project A to another Project B the sprint name also got renamed to the Project B from Project A.

After creating a new sprint  moving the issue to the new sprint of project B,the linkage still exists if I delete the old sprint name from project B then the new sprint name from ProjectB gets updated in project A Sprint from where the issue got moved .

How do I remove the duplicacy?