For help with Apple Podcasts, email the address below:
podcastsupport@apple.com
When moving a feed, it is recommended to notify Apple Podcasts as to not lose any subscribers. Do this by doing a 301 redirect AND set the new feed URL on the NEW feed.
Always be sure to check out our Podcast Manual and various pages of information and tips when searching for podcast answers. Our Podcast Manual has tons of valuable information for even the seasoned podcast producer.
Blubrry gives extensive notes when dealing with a new feed from Apple. Take a look here.