for the second query , try using totally different password from the existng one.
utils cuc reset passsword OSuser credentials.You can refer the link
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/9x/user_mac/guide/9xcucmacx/9xcucmac105.html
Changing the LDAP Integration Status of an Individual Connection User
regds,
aman