Bungie is aware of the issue, as evidenced in this [url=https://www.bungie.net/en/Forum/Post/223815629/0/0]post[/url]. You will need to complete the 380 light (i.e. Non-weekly featured raid) version of this raid for that node. [quote][b]"Meddle with Metal" Milestone in Rise of Iron Record Book[/b] We are aware that completing the LL390 Wrath of the Machine Heroic Mode is not unlocking the "Meddle with Metal" milestone in the Rise of Iron Record Book. Players should still be able to complete this milestone by completing the [u]LL380[/u] Wrath of the Machine Heroic Mode.[/quote]