Distant Horizons 2.3 causing chunk holes in pregenerated server world

So basically I pregenned a server world using distant horizons 2.2 to port to my server world. I was told that this pregenned data would still work in 2.3 and it has, with one big exception. There's a giant chunk hole that stretches for a certain radius around my world spawn. Beyond it everything generates fine, before it everything generates fine. But where it is the generation is just messed up and nothing I do can fix it. Please help. Another thing- occasionally the chunks will appear briefly in the void zone, but they dissapear very quickly