Only password synchronisation was enabled and Attributes synchronisation was not enabled in AAD synchronisation configuration.
I did following step :
1. cleared msRTCSIP-DeploymentLocator attribute in local AD
2. RECONFIGURED AAD with attribute enabled for lync server
3. Initiatied manual synchronisation .
Still the values remain same in online.
In AAD synchronisation wizard , it shows success delta synchronisation and even I performed a full synchronisation but the values are not synchronising with online user.