Website Membership - alternative accounts table

I'm using CMSB v2.14 and WSM v1.06.

I'd like to use an alternative accounts table and so have changed the parameter in the plugin to do this. To create the new accounts table (called users), I replicated the structure of the accounts table without the access list.

The problem I have is that creating users via the new users table in the CMS doesn't encrypt the passwords, even though this setting is turned on. When a user tries to logon, the logon fails, presumably because the password has been stored as plain text but the password entered at login has been encrypted.

To get around this, I've had to turn the encryption off and reset the passwords for all CMS users (the original accounts table). This now works but all passwords are stored in plain text.

Is there a way I can use encrypted passwords and an alternative accounts table?

Thanks, Paul.