How to remove old mission day missions?

MXXW

We are in the process of applying for a mission day for our city. We had a mission day a couple years ago. It was fun but all those missions are still live.

We want to avoid the confusion that we have seen and experienced in other cities where people would do an old mission day mission which can mess up the images and lead to missing the badge.

Therefore, we would like to remove all the current mission day missions so that only the new ones are live when the mission day happens. How do we do that?

XK150

You don't, because Niantic won't. So, you focus on what you can do, which is constantly telling people not to do the wrong missions, and accepting that some people just can't be helped.

Hydracyan

Try a different sponsorship and custom logo (if previous were black, make white). And there's the year on the mission name, no one is going to confuse it.

MXXW

We will design everything with a different colour logo and name the missions, but those are all damage control. It would be best if we could remove the old MD missions.

Is there any way to remove the old Mission Day missions @NianticBrian ?

And if so how do we do it? We have the original lists with all the submissions so can provide a list. The actual submitter is MissionDayNia so we can't remove the missions we created years ago without Niantic help.