Bug with copying workflows

Bug with copying workflows

This is getting very tiresome.

When I clone a workflow to use it as the base for another workflow - It doesn't disassociate. By this i mean that if i make an update to one workflow, it updates in the other workflow. 

I have assumed that when i clone a workflow it is the same as copying it so I can use the base of the workflow to set up a new entirely different workflow. 

What is going on. I really hope that this is not a lost in translation problem with the word 'clone'.
Alex