Go to the YP basic details page.
Go to the Destination tab.
Change the destination to the current situation, not known. And change the start date to 1st September.
Re-run the MI and then re-run the Activity survey, which will give you code 810 in the CSV.
If you have loads of destinations of YP's to update, for example, Destination of 11T.
Go On, MI Administration.
Activity Tab.
Go current situation is not known. Drill down on the number.
Filter out by ~11T transition and Dest code 3A.
This will give you all the YPs of Dest code 3A and the destination of ~11T transition.
Click Bookmark.
New bookmark.
Go to actions, and the destination should be able to update the destinations of the YPs in bulk.
Once destinations are updated, re-run MI and the activity survey.
⚠️Important: Please note they have a destination start date of before 1st November.