When you take advantage of Captivate's features and benefits as the hosting, analytics & marketing platform for your podcast, you have the option of either creating a brand new show or importing as many existing podcasts as you like from other podcast hosts.
Common hosting providers that podcasters import from are Libsyn, Blubrry, SimpleCast, Anchor, Podbean, Fireside.fm, Podiant and Audioboom but Captivate supports free imports from any host at all.
This is a complete, step-by-step guide to importing your podcast:
Note: after you import your podcast from another host, you do not need to submit your show to Apple, Spotify etc again - they will read the 301 redirect from your old host and automatically know that you've moved :)
Recommended reading: learn about 301 redirects.