Need help with Data Source Change? (How can I chang the schema of CDT?)

Hi

<Summary for the current situation>

1. In "Data Source Management" of "Appian Admin Colsole". The existing "Name", "Type", and "Connection String" are maintained, and only "Username" and "Password" are changed and applied.

     ex) previous username= appian1, changed username= appian2

           (previous schema= appian1, new schema= appian2)

2. In this case, the problem that arises is, the previously created CDT continues to look at the previous schema (appian1).

         (The following error message appears.)

3. I don't see a way to change the schema anywhere in the CDT object or XSD file.

4. Is there a way to change the schema of CDT, or is there a way to solve the situation?

Thank you