Update the Original Feed URL in your Feedburner Feed Details.That does it for the email subscribers.
1. For the feed subscribers: are your typepad feed URLs set to redirect
And of course the next issue is duplicate posts as you mentioned. I've imported my Typepad posts (over 300 of them) into W/P. Not sure how I get around the duplication issue.
Thanks. Do I need to redirect every post using .htaccess ??