Campaign Run Ids Missing From Activity Rest API?
Has anyone been able to successfully determine a campaign run id on the "Send Email" activity. For example I have a campaign which users can enter multiple times, and thus can receive the same email multiple times. I am looking for an explicit way to determine if the user recieved, opened, and clicked the links within an email. I noticed that in Marketo on the activity feed you can see the "Campaign Run Id" on the "Send Email" events :

On subsequent runs that ID increments:

However the click and open events don't have that campaign run id. So my questions are:
- Is there anyway to tell on email events (Open, Delivered, Click, Bounce, etc) the Campaign Run Id?
- How come in the API getActivities, the campaign run id is not returned for any events including the "Send Email" event?