Maroon's Modeling Corner [Cleaver of sorts 28/6]

[Maroon]

I'm back from my vacation, so I figured I'd do some work on that Cleaver. I've made a scabbard for it (lookin' good, if I may say so), but I've ran into an issue I've had before, and I wonder if any of the other Wings users here has a solution.
When I export my item as an object, I have to triangulate it for Warband to be able to read it correctly. However, I need to have two different versions of the scabbard (one with sword, one without) with the exact same amount of faces, edges, and vertices, and when I edit my model without adding or deleting anything after exporting the first version, the second (triangulated) version comes up with juuuust a tiny bit more vertices or edges, which I didn't add. The only solution I managed to find was to not triangulate the object, but that doesn't work well with Warband. The only other thing I can think of is manually triangulating, but that's a rather big amount of work I do not look forward to.
Any ideas of what I'm doing wrong?