Originally posted by Brock:

Pretty sure he lost gear. Use console commands to restore them. It is a game in ALPHA

Yup, everyone should be prepared to lose everything at any time because it is ALPHA.. such is the way of game testing.

However from the blog post.

On a more technical note, we’ve also been looking into a solution for a cloud sync issue where players have gotten their saves overwritten and replaced with earlier versions. Losing progress is always very unfortunate, so getting this fixed is something we’ve been keen on and really want to get right! Just like with other updates to the game lately, this patch will come to the Public Test branch before we push it to the Default version of the game, so keep an eye out for that if you want to help testing it!