Lightwave sdk limits how vue can perform together with Lightwave, all the other software that can be used with x-stream can, but Lightwave being the only one excluded as a side note.
This is with reference on using the hosts, spline drawing tools, to manipulate terrains and ecosystem.
Check section "host application spllines"

Anyone with insights on if this might be possible to correct..someday? perhaps another reason amongst others to work harder on lightwave layout mesh editing tools?