Hi,
There is no way to copy a Map Journal from Map Journal builder or ArcGIS Online yet.
We are working on adding that feature, it's high priority for our next release. Stay tuned!
In the meantime, here is the easiest way I know:
- Open ArcGIS Online Assistant and sign-in
- Click "I want to..." and then "Copy content"
- In the popup, login with the same account
- Find your item on the left side and drag and drop it to one of the box on the right side
- Go to ArcGIS Online > My content and open the new item (tips: using the modified column date sorting to find the new item easily)
- Notice that the id of your new item (in the browser URL bar) is not the same that the one in the item data URL (the id of the item data URL is still the id of the original Journal)
- Click the "EDIT" button
- Edit the URL field by replacing the appid with the one from the URL bar
Your new Map Journal reference the same maps and medias.
Besides that everything is duplicated (narrative content, global settings, section configuration) so you can truly experiment.
Enjoy