I have created a FTB Unleashed world on our server and chose Biomes O' Plenty as the generation type. The question I have is that we have been playing it for a while now and I have heard there is an option to turn ocean generation off in BOP. I know that would not get rid of oceans completely but it would make them much much smaller than they are now. If I do this where and would I see a difference in the world I have now? Would this change take place in chunks that have not been explored yet, would change the whole world, or wouldn't do anything since the map has been generated already?
Thank you for your help.