It's a question follows the previous one about how to change the DOF with preproc-sess (https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg64033.html). This bug also happens when I only use the bbregister.

Have this been fixed in Freesurfer7? If so, how can I add a different option for DOF while using preproc-sess? I don't find the related option in help document.