VOTE for New Map on BUILD1

[mIKe]

As ops any builds you want to save (and I suggest you do this) you can use the Worldedit command to save a selected region to a schematic file, which can then be imported into the new world.

The current world would be loaded as a 2nd world, however from past experience major updates usually break plugins, so at first the current world would be inaccessible until plugins were updated.