Hi !
So very impressive work and skill!
I, too, model my trees (for 3DS projects) with GrowFX, but am new to Unreal engine and thus far haven’t been able to transfer a GrowFX object animation loop to UE. Is this possible? Also if you don’t mind, any other tips you’d have about the process would be appreciated - I’m absolutely obsessed with detail in the trees and other plants so I’m trying to keep a monster of a rig up to date all the time so I won’t run in to memory or other bottlenecks and right now would love get a beginners grasp of how things should go in Unreal Engine but it’s such a frustrating process with the (at the start) complicated looking node-tentacles instead of an organized material in Max 
So yeah, before I get too far off the track my question was do you have a workflow you could share concerning the exporting of wind animation for trees? Thanks in advance should you find the time to answer.
Really intriguing stuff!