This issue will be fixed with patch 2.5.0 on Tuesday. https://www.bungie.net/en/News/Article/45540/7_This-Week-At-Bungie---12082016
They haven't patched the game since Nov. 8th. I'm willing to bet it will be in the next patch. Shouldn't be to hard to fix. Just link it to everyone who has it completed in the progress book.