The steps depend on your user interface mode.
User Interface Mode
Ribbon or Reflection Browser
With a session open in Reflection, from the Quick Access Toolbar, click .
Tap the Gear icon and then select Document Settings.
Clear display and scrollback buffer when disconnected
Delete all data from display memory when a session is disconnected from the host.
Save Secure Shell user name
Clear this option to prevent the user name you provide for this host session from being saved into the settings file, or recorded in a macro.
Set Up Display Settings Dialog Box