This read-write DisplayString(0..70) supplies the current password used to authenticate before changing it on a remote server, and per the description always reads back as an empty value for security. Admins care because this write-only-in-practice field is required input for the remote password-change operation to succeed. For example, an admin sets this to the account's current password when initiating a remote password rotation, and any subsequent read of this field always returns empty regardless of what was set.