I ran recon-all on a post-surgery MRI scan. Because of the resection area

FreeSurfer did not include certain parts which should be included. What is the

correct way of correcting this?

I thought about editing the wm.mgz file by adding missing white matter using a brush value of 255 and erase white matter with a value of 1. Followed by re-creating the surfaces using:

recon-all -autorecon2-wm -autorecon3 -subjid ...