Hi, I have this problem. I want to export to a scenario consisting of several mesh, but yabee only allows you to export a mesh at a time. I tried to do the join of all objects but the problem persists.
I know it’s very late to answer, but I’ll answer anyway, should anyone find this post with the Search function.
The easy thing is just to select all the objects by pressing “a” in object mode. Yabee exports everything that’s selected.