Can world composition be used with an already created map?

Hi , so I already have a large amount of stuff and work put into a large map. I am wondering if world composition can be enabled for that already created map and divided into sections , or if it can only be used when importing a new height map with nothing in it? Thanx

i dont think it would work the way you are looking to do it. basically how would it know how or where to cut up the sections.

there are methods however to “scan” your landscape into a heightmap, then you could bring it into a image program like krita to slice the image. that would result in you having the same landscape but in a world comp friendly manner.

course these are just my thoughts on the matter and there may be a feature i dont know of.