Heyo Sauceman7!
It should be that the Legacy Playlist should count towards Heroic Strike completions, but there have been reports that this isn't the case.
https://www.bungie.net/en/Forums/Post/248145994?page=0&sort=0&showBanned=0&path=1
Bungie is aware of the issue and are currently investigating--thanks for the report!
English
-
Cheers for the help, im also trying to get fossilized hermanion blossom for the lost prophecies and these would drop from heroic strikes. Regardless thanks for the reply