You can cancel an ongoing migration task on the page during migration.
The following figure shows the effect after you click Cancel Task on the Task Management tab.
Click Cancel Task. A confirmation box is displayed, allowing you to confirm the cancellation. Then click OK to cancel the task. After the task is canceled, the target server is unbound at the same time.
After confirming the cancellation of the task, the Server Management page on the CMS console will display a prompt to ask you to unbind the target server.