Doesn’t seem possible, im not gonna say impossible as i don’t know that for sure
but it may be worth the efforts to BACKUP and try upgrading project to UE 5 and just use
world Partition, instead of world Composition
partition is basically the better version of Composition that they made for UE 5
Failing that and continuing with Composition, your landscape already should have lods on it unless you’ve changed that or it doesn’t do that in 4 but it should
And you can just have all the static meshes on that landscape your rocks fences buildings etc load in as needed per level
You shouldn’t need to add more landscapes unless your world is truly massive as one landscape can be something like 100km^2 or something ridiculous and you can just have the buildings load in as needed that’s more or less what games with maps the size of Skyrim or GTA V do, because if you think about it and you stand on a mountain or something you don’t want to see holes in the map, barren landscape and low low poly stuff would be preferred
see the video above and that’ll kind of make more sense, you only need to add another landscape like he does in the video if you need to attach more play area