Changing OEC password stored in C2

I changed my C2 password

I changed my OEC password

However the OEC password stored by C2 is still the old one and when I enter the autotrading setup I am prompted for the account number but I am not prompted for submitting a new password.

How can I change the OEC password stored by C2?

We do not need the OEC password for autotrading, therefore C2 does not ask for it anymore.