I can't connect in my web sites

I have a problem with Local by Flywheel, I have version 3.3.1, Local offered to switch to 6.1.5, which I did. Now I have two Local, on the new version there are none of my sites, and on the old version I have all of my sites that I can’t open anymore. Ideally, I would switch all my sites from the old version to the new version, and get it working again of course. Thanks

You will need to export the sites from v3.x and import them into v6.x