To edit newsletter preview:
- Add the new newsletter to the /past-newsletters document management page: under Add/Edit, click "New..." then upload the new newsletter
- Save it to the page by clicking "upload"
- Get the URL for the latest newsletter: go out to the public (non-admin) view in another window and navigate to /past-newsletters, then right-click on the newsletter's link and select Copy Link URL
- Go to /admin/newsletter and double-click the I-Frame icon
- Paste the new newsletter's URL (preferably making it relative by removing the .com and everything to the left of it) and submit that change
- Also while in /admin/newsletter, update the download link by click once inside the words "Click here" and then modify the link by clicking the Link icon in the toolbar
- Paste the new newsletter's (relative) URL in the Link dialog and hit Submit
- Click Update to save both of these changes to the Newsletter page