Today’s No Man’s Sky mega-update, Beyond will change a lot about the game, but your old creations should emerge unscathed.
In a tweet, creator Sean Murray explained that discoveries and player-made structures would stay the same post-patch.
People have invested so much time and effort into No Man’s Sky, hundreds of millions of hours. Unlike Next we aren’t wiping the servers or rebooting the universe. We know how much people care about their creations and discoveries.
— Sean Murray (@NoMansSky) August 13, 2019
Source: IGN.com No Man's Sky Beyond Update Will Not Wipe Your Creations