This is relevant if you have two or more campaigns that you would like to see within the same project.
Enter one of the campaigns you want to merge. From here click "Actions" next to the campaign title.
In the drop down menu, choose "Duplicate campaign (reuse same tracking points)".
Rename the new project.
Click "next" in the bottom right corner OR "tracking points" on the left.
From here, click the green "+" button on the right-hand side. Type the other campaigns name into "Search existing".
A list of that campaign's tracking points will come up. Click "ADD" next to all of the relevant tracking points.
Remember to "SAVE" the merged campaign.
Note: It will take a few minutes until the merged campaign is updated.