By default when a configuration session is committed everything modified in the configuration session will be committed to the running configuration, even if the running-configuration has also changed since the configuration session was created. This means that if the running-config has been modified since the start of the configuration session then those modifications could be overridden when the configuration session is committed. 

CLI Session EOS 4.30.0F

LDP Hello Redundancy uses the LDP Extended Discovery Mechanism to establish a redundant targeted Hello adjacency

Session Management is a new section on the CloudVision Settings > General Settings page that allows users to

CVP Session CVP 2021.3.0