Talk:Challenge/@comment-25118614-20140629054818/@comment-1004812-20140701103140

The "further" was put there because this challenge becomes available the first time you complete "The most basic mission! Sortie 6 times in 48 hours."

I think it's meant to disappear on daily reset and appear only when you finish that certain challenge. That's not what's happening in-game anyway, so for now it just what Reaper said it means.