tmux-resurrect/docs/restoring_previously_saved_environment.md

Restoring previously saved environment

None of the previous saves are deleted (unless you explicitly do that). All save files are kept in ~/.tmux/resurrect/ directory, or ~/.local/share/tmux/resurrect (unless ${XDG_DATA_HOME} says otherwise).
Here are the steps to restore to a previous point in time:

• make sure you start this with a "fresh" tmux instance
• $ cd ~/.tmux/resurrect/
• locate the save file you'd like to use for restore (file names have a timestamp)
• symlink the last file to the desired save file: $ ln -sf <file_name> last
• do a restore with tmux-resurrect key: prefix + Ctrl-r

You should now be restored to the time when <file_name> save happened.