We just released a three-part video tutorial showing you how to convert existing models and animatins into UnrealEngine compliant contents from Maya with PiStage toolset.
Check them out!
Part I: https://youtu.be/5tMfKxFe8Zg
Part II: https://youtu.be/nsIMBaWnNRk
Part III: https://youtu.be/jpYtV5veAFY