@Otome-chan
Ok the answer from my end: no joy

My Malaysian mutuals and I worked out a fedi-specific tag and I tested it on a regional SEAsian mag just set up @magASEAN and my own personal one for my website @myMOAC (which i just set up today).

Idk what's the order of primacy, i think it's just by luck of what gets scanned and sorted into - the younger magazine captured it in the microblog but not the regional one. It's definitely a bug or current limitation. If i can opt to boost to a magazine instead of my own stream that might an acceptable compromise.
@fediversereport @fediversenews @fediverseobserver @tchambers @m_artigiani @clacke

@Otome-chan
Let me have a test... BRB
@fediversereport @fediversenews @fediverseobserver @tchambers @m_artigiani @clacke

@Otome-chan
I can confirm that posts aren't sent to multiple magazines (yet) and it seems like kbin scans to sort only to the first # or @. And if you post to one magazine with tags meant to be picked up by another that other magazine still won't pick it up.
@fediversereport @fediversenews @fediverseobserver @tchambers @m_artigiani @clacke