Has anyone got X-Men Vignettes Volume 2?

It collects the backup strips from Classic X-Men #14-25 and apparently Guardian is listed in it. Now I know #16 reprinted UXM #109 with extra pages, but I wasn't aware of Mac appearing in any of the vignettes? I'm just wondering if the addition is wrong/confused.

If he is in one of the backups which issue is it?