Mastodon boosts don't show up on quitter
Per https://quitter.se/notice/10847070
I suspect the other way around is also true.
Additionally, I think there's a related problem with favorites: they're not coming through. Compare https://quitter.se/notice/10857497 with https://mastodon.social/@Gargron/2360734
In fact, comparing Gargron's local and remote profiles is a great way to see how these two problems are connected.
Issue on Github: https://github.com/tootsuite/mastodon/issues/1659