How to keep the mechanical links from Creo Parametric to Creo Illustrate to animate a mechanisme ?

Hi,

I have established some mechanical links between different parts in a creo parametric assembly. When I open my file with creo illustrate, I would like to keep those links while animating (to show the mechanisme behaviour). My problem is when I want to animate my assembly, each piece act like an individual one...

How do I keep my mechanical links ?

Thank you