Import DNDBeyond Encounters/Monsters to ROll20

So making some custom monsters in DND Beyond is easy and useful. BUt then how to get them into Roll20? Is there an easy (or any) way to use a home brew monster from DNDBeyond with Beyond20 extension (just like a character) or import the stats it into Roll20 so you can just add it t the journal?    Seem like you need to make it from scratch in roll20. 

There have been importers in past times (there may even be a working one currently--I don't know). They usually break after some time unless they are diligently maintained. You are dealing with two different companies that have dynamically evolving database models, and no interest in collaboration. To automate any kind of import in Roll20 would require a Pro level subscription with access to the API. Anything that didn't meet that bare minimum would almost certainly be circumventing paid features and break End User License Agreements And or Terms of Sales/Service. I don't know what the advantage of homebrewing is in DDB. It's easy enough to do in Roll20 by either starting from scratch (as you say) or just tweaking an existing monster.