Missing Option / Description on how to Leave Certain Fields Unchanged

[dkelosky]

Ex:

C:\dev>zowe config secure
Please enter profiles.my_base.properties.user:
Please enter profiles.my_base.properties.password:
Please enter profiles.my_base_apiml.properties.authToken:

I'd like to change my password, but I would like to leave my user name to be the same value as before. How do I do this?