I have 4 leagues setup, 2 are in progress, on the 2nd version(the last free one) and I'm wanting to upgrade to the new version. What needs to be done to make sure all my teams(names,draft order,trades) and keepers are transferred over to the new versions in all my leagues?

I've saved several mocks under different names using different drafting strategies and I wanted all of them to carry over. Is it a simple process? Thanks in advance
Explaining like I'm a 3rd grader would not be bad..lol

Just download the update and install it on top of your existing one. It will not overwrite any league files that you have already created.