Extraction sims 2 castaway object animations

Henlo frens,

I'm currently about to convert the sims 2 castaway lean bed 
mesh and texture and all worked great 

but now I stumbled across the problem of animation
in the sims 2 castaway they slept under the lean on the ground
without blankets and stuff

my question is:

Is it possible to extract the animations for the sims 2 castaway lean bed 
to the lean bed I made for sims 4? 

and how does that work?