You can save your game and load an existing game by using rcon.
If you're not sure how to use rcon, then please check out this knowledge base article: https://www.elitegameservers.net/controlpanel/knowledgebase/106/How-to-administrate-the-server.html
Loading a save game
Use rcon to execute the following commands:
- Type
ls
to list the files of the current directory, a number will be beside each one, which represents<number>
below. - Type
cd <number>
to go to that directory. - Type
load <number>
to load that file.
Saving a game
You can save the game by using the rcon command:
save
The command should be followed by a filename for the save file or a number.