Justin Valiquette emailed us an excellent question which I will share with everyone.
I have an existing Podcast that is registered with iTunes already. To create
this podcast, I used the difficult method of creating a blog, and a
feedburner account to create the .xml feed. I want to begin using Podcast
Maker from now on. Also, I just purchased new hosting space that I want to
transfer all our existing podcasts to, and put all the new ones on.
How can I create new podcasts using Podcast Maker that will register under
the same podcast title on iTunes so people don’t have to re-subscribe.
Thanks,
Justin
The nice thing about FeedBurner is that it acts as a layer between
your real feed and your listeners. So even if your real feed
moves, all you have to do is point FeedBurner to the new feed and
your listeners won’t even know that the switch happened. There are
two parts to this move. Publishing your new feed, and reconfiguring
FeedBurner.
Part 1 - Publishing Your New Feed
To publish the new feed, open up Podcast Maker and choose File
then Import Podcast Feed in the menus.

Put in your current feed URL in the dialog that pops up.

After you hit the Import
button you will see a new document with your podcast.
Now, if you don’t need to move all your existing media files from
its current location, all you have to do at this point is hit
the Publish button and upload your feed to the new
server. Move on to Part 2 if this is you.
If you also want to move all of your media files to the new server,
transfer all those files to a new directory on the new server using
your favorite FTP program. Make sure that it’s accessible from a
web browser.
In Podcast Maker, choose each episode and look at its Basic
tab. At the bottom you will see a URL in the Location field.
Edit the URL of each episode to match your new server’s URL.

Now publish your feed. You are almost done. You just need a simple configuration change in FeedBurner.
Part 2 - Configure FeedBurner
- Login to FeedBurner and choose the feed that you are moving.
- Click on Edit Feed Details…
- Put in your new feed URL in the Original Feed field.

After this maneuver it will be easy to publish new episodes since you will be using Podcast Maker. The best part is that nobody will know that you changed anything.
Thank you Justin for the excellent question.