Upstream a patch to cover a migration issue

Summary: Fixes T4928. I'm not sure how this column was missing, but this patch can't hurt.

Test Plan: Reasoned about behavior.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T4928

Differential Revision: https://secure.phabricator.com/D8967