I tried to clone a node type using features - as I did not found any module to do that straightforward.

I created a feature based on the node type I wanted to clone and edit the created module according to the new node type I wanted : new name, one field name changed
Then I enabled the corresponding features module.

I did not found my new node type, so I went to the Feature manager page admin/build/features
I ticked my feature that was not, but nothing happened yet.
The page said that the module was overridden and gave plenty of information about that, but I could not figured out what it meant.
The only thing I could do was to "recreate" the feature.

The result was replacing the originally cloned node type by the new feature.

In short, Features destroyed the original node type and replaced it by the new one.

I had to restore the database to sort this mess out.

1) Features is very insecure and badly documented
2) what is the right procedure to clone a node?
3) Feature look amazing - once mastered

Thanks for help