Talk:Shadowforged Armor/@comment-216.40.82.197-20170818150248/@comment-4199297-20170818160703

I guess they didn't flag that one as fusable... Heck they haven't officially mentioned Heroic SF as fusable at all. There was a wiki forum topic about it before where multiple changes to fusability of Heroic SF were reported: Thread:292332

The only thing that _has_ been officially mentioned about SF fusing is season x + season x or eternal -> season 0-5. Testing it, most of my heroic SF seem to now be flagged as season 0, since they can be fused with season 0 armors or other heroic armors, but not with a season 1 or season 5 armor.