Quote: "is there a way that I can split it into two different maps and then link it together though a new level?"
And to make things easier ...
Delete what you don't need for level 2 and save this as a new name ... L1 for example
Load the original map ...
Delete what you don't need for Level 1 and save this as a new name L2 For example
This will save you creating a complete level 2 from scratch ...
Hope that makes sense ..
The only person ever to get all his work done by "Friday" was Robinson Crusoe..