Save history in git

Having problem with saving commits history. I have main branch called 'master'. In the root folder I have a directory named 'kp' and some other stuff, which I don't need anymore. I want to get everything in 'kp' folder out and put it to the root directory and save commits history of the files in a folder. 开发者_StackOverflow中文版I'v tried to (step by step):

1. Clone the repo;
2. Create new branch;
3. Use a command git filter-branch to get my data from 'kp' folder;
4. Push a new branch to a repo.

But there is no history. What I'm doing wrong?

I believe the answer you're looking for is here.