First, the reason for not deleting the original label. If the annotation is deleted, it will not help the tutor to check whether your paper has been revised according to the annotation, which will reduce the tutor's work efficiency. Labeling is also convenient for comparison, and the modification may be worse than before.

After modification, you can reply in the comments: the question has been modified, and then highlight the modified part.

Usually, you can directly modify and improve the version modified by the teacher. If the tutor's annotation is a format problem, pay attention to whether there are similar format problems elsewhere in the text when revising. If it exists, it needs to be revised and improved by itself.

The paper needs to be marked on the revised draft, which is conducive to sorting out your own ideas and knowing your thoughts at that time. Many times, the ideas that can be modified are all in a flash of light. I don't even know why I changed it like this, and I don't know what it was like before.

Keep your comments so that when you send them back to your tutor for review, the tutor can see at a glance whether you have made targeted changes to each comment. Delete all comments after the final draft is confirmed.

In the process of writing your thesis, the tutor may review and annotate your article many times, suggesting that each version can be saved as a separate file.