Hello its lish!
I remember that on the previous versions there was an option to save conversation and then a little bit under you could put a password so no one can't see your previous conversation but you!

is it avalible on this version?
if yes, where?
if not, when it will be avalible?

thanks, lish

Yes this feature is avaible. go into Messenger plus live preferences, then at the top click on the tab that says conversations, then on the right click chat Encryption and then type in a password you want your logs to be protected by, is that what you wanted?