Interesting moments field not showing

Hi

Just took over a Marketo instance after their implementation and I see they don't have the field < Interesting moments> as a field to drag into the smart list, campaign, but they do have in admin the below fields

- last interesting moment date

-last interesting moment desc

-last interesting moment source

-last interesting moment type

 the field doesn't exist to drag a drop. I wonder if I should reach out to Marketo , or when the issue comes from

Any tips as to where to start to fix the problem?

Thanks.