First off, even though elements are non-beta they might have added changes to those elements in the beta
Secondly, you can save them to your hdd
@DV-13 (View Post)
There is no way to convert back a save, since saves are based on major version numbers, so you can't load anything made in v89 in v88.
If you didn't use any elements, PIPE, or STOR, the save format is exactly the same. You could load it in something like my mod: http://tpt.io/:11117 . It lets you load saves from future versions.
(link fixed by jacksonmj)
Thanks.
Maybe he made something using protons or something new?