Question Two worlds on multiverse but no buildings

Hi guy's so we have a world the spawn world and when we type /spawn everything works and we get teleported to the spawn we added a second world into the server and then did /mv tp Market (that's our second world) and in single player there is a building at the co ordinates but when i go to the co ordinates in multiplayer the building isn't there.

So when i make the second world (Market) to load as the main world we spawn right where you spawn in single player but when we type spawn it brings us to our spawn world but there's no spawn there

So anyone know how i can fix this???

I even set a home on the Market world and when i make the spawn the main world then teleport to market world and i then type /home it teleports me but again no buildings

EDIT by Moderator: merged posts, please use the edit button instead of double posting.