Reload map

I have mini game plugin.
The game is divided into two stages: game and deathmatch
Early I have a lot of map on one level, and teleport player to need position
But, I "updated" this system:
now I have one archive, and untar and rename map, when game room is create
Problem:
I have to teleport players from 'game map' to 'deathmatch map' with same LevelName.
Is there any easy way to do this?
And sometimes when I teleport player, client doesn't 'build a map' and screen all the time shaking :c
Sorry for my eng

 

Having a map named the Same thing will cause lots of Problems

 

I don't need load this level together.
I can unload first and load second

 

Teleport Players somewhere else
Unload Map
Load Map
Teleport Players to the map

 

You can maybe del the First Dir and Copy a new one