What about my progress?
Save progress does not carry over between the test server and the live server. These are completely separate. You can however manually copy your save files from the live branch to the test branch.
Basically what you need to do is go into your documents and find storage folder : C:\Users\your name\Documents\My Games\SnowRunner\base. Copy the whole storage folder and paste it here : C:\Users\your name\Documents\My Games\SnowRunnerBeta\base
Hope i helped