Completely mess up my comments!

I used this plugin to move from one post from the update of that post the very numerous comments it have.
I choose the option to copy from one to the other including the answers.
The result is that it completely mess up my commments. I’ve been correcting all that mess for hours now, and I am not done yet!
Stay away from that plugin that should not be available in the WordPress repository considering the problems it causes!