u/Prometheus_II

At the behest of my players, I've added a few mods to my server's modpack. However, I didn't realize those mods add new ores and even structures to the game. Some players have already explored long distances, which means those chunks have already generated, but without the new ores or structures. I don't want to rebuild the world and wipe the chunks that have been built in, but I do want to re-generate the chunks that were only walked through. Is there a tool or command to do that?