I'm currently using cocoon rails gem to create nested forms.
The problem happens when I edit the "father" entity and remove some nested items, it adds another one instead of removing it. I created a gist file that explains it better with ruby on rails console logs. Here it is: https://gist.github.com/msmosso/310835bbb1a4b7cfe1a9.
Thanks for advance. Cheers!