If this run shows up, the mods allow the iDroid tick to mean task complete, despite only getting 3/4 skulls. This would mean you could only extract 1 and still get it.

Mod note: re-timed to current time rules.

00:27.834 - Run starts (Fade in: Last dark frame) 02:06.467 - Run ends ("Objective Complete" text appears)

Also yes, as long as the task is checked* it counts.