My wife and I ran into an issue last night where we reloaded a previously started world and all of her map exploration was gone and she needed to re-explore everything. I was logged on as the primary PS4 plus gold user and she was logged on as another PS4 silver user. I was the one to disconnect the original world. Last night I had her disconnect the world and when we reloaded her history and mine was still there. So we haven't been able to replicate.
Steps to Reproduce
Unknown
Unknown
A developer has marked this issue as fixed. This means that the issue has been addressed in the current development build and will likely be in the next update.