ZBrushCentral

ZModeler Stitch - Why does this displace entire geometry?

I’m trying to understand why this happens, and what (if anything) can be done to prevent it.

When using the stitch edge tool to close a tiny hole, EVERY single face and vertex of a large model is displaced.
Is there a reason for this or a way to avoid this?

Before stitching - Geometry of duplicate subtools is lined up:

After one stitch - Entire geometry of stitched subtool is displaced:

Attachments

stitch1.jpg

stitch2.jpg