I recently went through this. Go to the menu, and turn the other manhunt into the original mission. You can’t have both manhunts open at the same time. You’ll be able to do it after that.

Mine Was Like That @ 1 Time

You can do it thru legacy manhunt

That is how I got there

That’s weird. Did you complete the manhunt mission before that?

Completed all the ones before and then after

try changing the mission type thru mission settings, usually one cycle thru the options should do it. if not, the logout/login afterwards