Zoom room user password

In Zoom Room installer version 5.11.7, the login password was stored in the windows registry.

The password was stored in HKLM/software/microsoft//windows nt/current version/winlogon

We have recently upgraded to version 6.6.4 and it appears that the password is no longer stored in registry.

where is the password stored now ?

was this change part of recent security enhancement ?

which version  introduced this improvement?