It might make things easier, yes.
(I’m not entirely sure of the following, having not done it myself for a while, but think that I’m correct; if it doesn’t work, then try looking through or asking in the Yabee thread.)
If you do, then get the latest version of Yabee and try selecting your terrain object, adding a custom property named “Collide” and giving it the value “Polyset keep descend”; then try exporting again.
That done, open your new egg file in pview and press “shift-c”; you should see collision geometry overlaying your standard geometry.