What counts as exploration ventures in Challenge log?

[Mcshiggs]

I find it rather insulting that if you send both your retainers on exploration missions once a day, which is perfectly reasonable, you end up exactly one short of the challenge.

That's like a giant middle finger to the player.

Not all players, just the ones that choose not to pay for optional services in a subscription based game. Next watch them put in a fantasia potion category in the challenge log.