It does not appear the linkto xattr is transferred on file migration. 

        /* remove the 'linkto' xattr from the destination */
        ret = syncop_fremovexattr (to, dst_fd, conf->link_xattr_name, 0, NULL);
        if (ret) {
                gf_log (this->name, GF_LOG_WARNING,
                        "%s: failed to perform removexattr on %s (%s)",
                        loc->path, to->name, strerror (-ret));
                ret = -1;
        }