You cannot move applications between accounts.
The only reports on this are when the developer includes (and has all the documents confirming this), changes his developer account to an individual company registration, and then acquires his corporation with another company (with all to prove such an acquisition by Apple).
The best thing you can do is to remove the application from one account and (re) send it to another, which will be associated with a change in the Bundle ID and thus lose the application of previous customers, reviews, ratings, etc.
ADDED: The above information is outdated. In 2013, Apple added the ability to move apps (in normal state / condition) between accounts in iTunes Connect, saving users and reviews.
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