Dear Alfonso,
I found a bug in conn. I ran a regression analysis, and "results explorer" window showed a cluster (26,-90,28), the details of this cluster were shown:
size: 160 size p-PWE 0.000263; size p-FDR 0.000231; size p-unc 0.000005; peak p-PWE 0.549599; peak p-unc 0.000004
regions included in this cluster:
138 voxels covering 6% of atlas OP r (Occipital Pole Right),
20 voxels covering 0% of atlas sLOC r (Lateral Occipital Cortex, superior division Right).
2 voxels covering 0% of atlas. not-labeled.

A couple of days later, I want to extract the z values of this cluster, but to my surprise, when I opend, the regions of this cluster became very different (please see attached picture), but other characteristics (i.e., cluster size, coordinate, and p values) of this cluster did not change. I did not change anything in setting. But why regions of this cluster changed (OP r became SCC l)?

Thank you very much in advance!
Best,
Xinyuan