It can delete all chunks without your buildings
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
You need to run the regen command on the mod being affected. PFR's command is /pfr_regen. Presumably RSO has a similar thing. Ores will regenerate and continue generating correctly after that.
Pfr ist available by https://forums.factorio.com/viewtopic.php?f=94&t=51656 only.
So, with this command (/pfr_regen) it works very well. https://imgur.com/d8Dkpv4
Where I can find all reset commands for all resources spawning mods?