Originally posted by glass zebra:

The branch selection in Steam directly says "Public test version of Valheim. Please backup your save data before using."

Originally posted by LastChime:

Maybe copy-paste before trying it, then set up the legacy save as a non-steam game if you're that worried about it.

Originally posted by Kursor1:

If safety is your concern then I'd say use the save where you've advanced further and therefor should have better gear and more resources.