This one is fiddlier than most because Palworld names save folders with a long hex ID. Read it all before you start.
- Stop the server from the Console tab in the panel.
- On your PC, open
%localappdata%\Pal\Saved\SaveGames. Inside is a numbered folder, and inside that, one folder per world with a long hex name. - Work out which is the right world by its modified date, then zip that hex folder.
- In Files, go to
Pal/Saved/SaveGames/0/. There'll already be a hex folder there from the server making its own world. - Write down that folder's name; you need it in a moment. Rename it rather than deleting it, so you can undo this if the upload goes wrong.
- Upload your zip and unarchive it, then rename your folder to exactly the name the server had made. This is the step people miss.
- Start the server and check the console. If you spawn into a fresh world, the folder name didn't match.