It works like it says, however since the update to version 2.0 all of my saved sessions and tabs are completely lost. I'm not going to personally continue to use something that will lose compatibility with each new version, it negates the entire purpose of the add-on.
I'm very sorry. It's my fault and mistake. You can go back to version 1.0, open saved sessions in new windows, upgrade to version 2.0, and re-save them.
