Uploaded world with newly, regenerated nether and end.

[Fyrelite]

I have uploaded my world with the /ul command, set it to the default world and the nether and end is linked up to the right seed, however they are new and regenerated, with no marks. How can I fix this (without uploading the nether and end separately if possible)
Also, is there a way to delete the default world, world_nether and world_the_end saves whilst keeping the ul_world ones?

[notminehut]

If you want to upload a custom nether and end (I think that's what you're asking...), you need to first delete the current world_nether and world_the_end, then upload the new ones with these names.

[Fyrelite]

How do I replace the nether and end?

Currently my worlds list is as follows:

world
world_nether
world_the_end
ul_world
ul_world_nether
ul_world_the_end

the uploaded worlds are linked, but the nether is new, how do I delete worlds?

[Fyrelite]

How do I replace the nether and end?

Currently my worlds list is as follows:

world
world_nether
world_the_end
ul_world
ul_world_nether
ul_world_the_end

the uploaded worlds are linked, but the nether is new, how do I delete worlds?

edit: i've done some research, I've downloaded a backed up version of my nether and end, do I /del the ul_world_nether and ul_world_the_end files and reupload the nether and end separately?

Also is it possible to delete the world, world_nether and world_the_end files?