if you need such functionality :

1. create a custom module

2. inherit desired model, 

3. create onchange method on field (that capturs some data) that will 

4. 1. first write all current values

   2. then return create new record

   
   

Typical this is something you should never do( write in onchage method) but in your case it can be easy way to achieve desired behaivour...

beware that this could lead to more problems than benefits

Hope it helps a bit