When I sewing the two meshes together with obi Stitcher, I could see the bounding box of Obi Solver's solution has changed, but the two meshes did not change. I don't know why.
as figure.
https://lh3.googleusercontent.com/u_mmgF...0-h1005-rw
as figure.
https://lh3.googleusercontent.com/u_mmgF...0-h1005-rw