How to rename Munin node without losing history with Munin 2.0.x?

Hi all,

I’m running Munin 2.0.25 and I want to rename my Munin nodes without losing history.
I’ve found this: but it is specific for 1.4.x versions of Munin.
This seems more complicated with 2.0.x.
Is there any body here who knows how to perform this?