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Tree not reacting to directional wind

I downloaded a couple of free assets packs which include trees.
The tree that comes in the pack from epic moves just fine with the wind, the other from another developer doesn’t, either if I add the tree as foliage or just drop it in the scene.
My question is, what do they need to be able to move with the wind? Do they require a rig and an animation? The tree that works doesn’t seems to have anything like that.