The question Transfer a folder from local system … to … virtual system was, according to its revision history, migrated from StackOverflow to SuperUser over a year ago (May 31 ’13 at 9:14), and then closed 2014-07-19. The question page says,
migration rejected from stackoverflow.com
and the link (https://stackoverflow.com/posts/16850504/revisions) goes to StackOverflow’s charming 404 page.
It seems unlikely that any trace of the question remained on StackOverflow over a year after it was migrated to SuperUser, so I suspect that the link was broken when it was posted, on July 19. This seems like bad behavior. (And is it really appropriate to say “migration rejected” over 400 days after the question was initially migrated?)