Not able to remove the value of email id

[ashwin-pandey]

I have made the email id as a non-mandatory field. So, if the user doesn't provide their email ID, it still creates the user.

Now, If the user has provided their email id, and wishes to remove it, they can't. Is there a way I can handle this?

I tried updating the traits using update as well as patch APIs, but none of them are working.

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There is another use case that I am struggling with,
If the user doesn't provide email at the time of user creation, kratos is by default taking the email id of the previously created user.

Is there any way to stop this from happening?