I didn't see too much in the guide(or maybe I"m looking in the wrong place)

Any chance of just a quick guide of what can and cannot convert and why?  I seem to have numerous missing tree walls...but some are showing up.  Tree billboards are completely missing as well and I'm assuming not supported?  Still looking for where to control the sun as everything is very bright.

Not sure if it would be possible, but a youtube video walking through converting a database would be amazingly nice!  I do appreciate ya'll making this tool available.  I'm very excited to see what it will do.

Regards,

Matt