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Git commits in Moodle 3.5.4 by Davo Smith
commit e35c7c2c50b836d9f03016aa61296c9a2d3ee685 Author: Davo Smith <davo.smith@synergy-learning.com> Date: Mon, 29 Oct 2018 17:26:58 +0800 Tag: v3.5.4 MDL-63798 mod_assign: fix restore when group is missing