Model not welding

Hello. I am trying to make a rabbit model jump, but whenever I move the RootPart, only the RootPart moves. I’ve tried welding the root to all the other parts and welding parts to the root and none of them worked. I am using TweenService to move it and want to avoid using :SetPrimaryPartCFrame because the rabbit is going to jump all the time.
Here’s the model
image

All the parts contain a WeldConstraint with Part0 set to the part and Part1 to the root.

Thanks.

You should use motor6d instead of weld constraint for rigged characters like your bunny.
I’d advise you watch a rigging tutorial to figure this out.

I don’t want to rig it. I don’t need the legs or head to move. I only want to weld the parts to the RootPart to make it easier to tween, but the parts just wont ‘stick’ to the RootPart

I’m also pretty sure tween only tweens the thing(s) you specify (rootpart) so specify everything or just the bunny model.

You haven’t got the other Parts/Unions Anchored have you?

I didn’t have them anchored, only the RootPart was but I solved the problem by unioning all the parts and then moving them.