If a character has had a stat perplexed up and the character that did the perplexing then has perplex outwitted, does the character still have that stat perplexed up? (in the past it removed the perplex on the stat but now with outwitting super strength not causing a character to drop an object i'm not sure...)

When a character no longer meets the requirements to use
an effect that was already activated that had a duration,
the effect temporarily ends (but the duration time
remains). If the character meets the requirements again
before the duration expires, the effect reinstates. If the
duration expires before the character gains back the effect,
the effect ends and the character would need to reactivate
the effect.

The character would no longer have the ability to use Perplex so the effect temporarily stops. If the Outwit is removed before the Perplex would expire then the Perplex's effect resumes until the duration expires normally.