serious issue with 1.1.6 and 2.0.1

Hello friends,
As my current application is running on 1.1.6 which now i want to shift it to 2.0.1, but i am facing lot of problem, as my application is also very big, so suggest me what easiest way i can do to shift my application from 1.1.6 to 2.0.1.

Thanks And Regards
Abhishek shukla

Hello friends,
As my current application is running on 1.1.6 which now i want to
shift it to 2.0.1, but i am facing lot of problem, as my application
is also very big, so suggest me what easiest way i can do to shift
my application from 1.1.6 to 2.0.1.

Upgrade to 1.2.x first. A lot of stuff was deprecated in 1.2 and then
removed completely in 2.0. By moving to 1.2.x first you'll get
relatively helpful messages about things you shouldn't use rather than
things just breaking.

Fred