Hi HP
I have marked 2 points on my subject on 4 images / defined distance / aligned cameras / rotated the sparse cloud to align to the grid / reconstruct normal / export mesh as .ply or .obj default settings. Loading the scan in zbrush or Mesh lab, the scan is in the same orientation as the alignment (sparse cloud).
when add the distance CPs ( and set the distance with the CONSTAINT ) then need realign the scene so its USED in the whole alignment
then can recon and the scale and rotation will be preserved
Do you changed anything on the OBJ export ?
can post some screens so we can solve it ?