Welcome to the forum Gtox

I hope you stay on the skyline journey with all of us!
As for your problem, yes skyline has a built in animation splitter. This is also based in the mesh editor.
It is built into the timeline:
> First Select and import your mesh into the mesh editor.
> then select the animation from the dropdown for the "all in one" anim.
> Next Scrub using the LMB Hold + Drag on the timeline.
> Then when you find the start frame, mark it by RMB + clicking on it and choose "Mark - Loop Start"
> Next scrub to find the end frame of the animation.
> When found, again RMB + click on it and choose "Mark - Loop End".
> You should now have a highlighted bar showing the animation.
> Now Right click on the timeline and choose extract animation.
> Enter the animation name, then press ok.
> Save your mesh and reload the sceneEntity.
We consider the "3dsMax documentation" on our wiki out of date and not the fastest method to get assets into skyline.
FBX is skyline's best format for importing a 3D model.