Blender to Outfit Studio Vertex Mismatch

[Macross.]

I'm trying to create a custom slider morph in Outfit Studio. I have done this quite a bit, but this particular transform is a pretty serious deformation; using just the tools in OS I can't get the final shape as clean as I would like. So I've turned to Blender to do the final clean up.

 

I originally just exported the rough slider data as an obj, brought that into blender, did some shape clean up, and exported it back as an obj. But when I tried importing it as slider shaping data, I got a vertex count error.

 

I assumed I just messed something up in the import/export process and lost a tri or something.

 

Several hours later though, I'm still fighting this same problem.

 

At this point I have brought the base shape into Blender, then re-created the slider as a shape key on that mesh. So I know it has the same vertex count; I just moved the vertices around, no fancy tricks.

 

However, when I export the base, and the slider shape as objs, I still get two different vertex counts.

 

Is there some silly export setting I'm missing that can cause this?

[Andy14]

Check "Keep Vertex Order" at import in Blender.

[Macross.]

I appreciate the suggestion, and I think normally that would solve the issue, but I don't think I explained my particular situation well.

I have basically scrapped the files inside OS at this point (it is a custom mesh I created in Blender in the first place, so no great loss).

So. I have a mesh in Blender. It is my base shape. On that mesh, I have created a shape key, and deformed the mesh within that key to match my desired slider shape.

As far as I understand blender, shape keys can't change geometry data, out side vertex positions. So these two shapes should have identical vertex counts. Which, while inside blender, the statistics indicate they do.

Now, I am exporting both shapes as separate obj files. One for the base shape, and one for the slider shape. Again, they should be the "same" mesh, just deformed from one to the other.

However, when I check the output, one file is 12 lines longer than the other.

I don't understand how the mesh can be output with two different file lengths.

[Macross.]

I'm still trying to understand what exactly is going on here. But I did find a solution.
 

Bringing the blender exported Objs into MeshLab correctly identified them as having identical vertex/poly counts. I exported them out of ML as new files. Brought them both into OS. Exported both of them from OS as new files. Then brought that base shape into OS, and was able to use the new slider shape obj to import the data.

Something about my geometry was clearly getting simplified/reduced by blender/OS interpreters, and using ML as a middleman seems to have skipped over that issue.