Is there some way to take existing licenses and “import” them into the Mac App Store?
For example: I already have purchased MacJournal on my Mac. Once the Mac App Store is available, I’d like to download MacJournal and use the Mac App Store to auto update it. Of course, I don’t want to have to pay for a second copy of MacJournal.
Currently Apple has no plans to do anything like “sharing” of customer data or purchases in either direction. So, it looks like apps bought from the MAS will remain managed there and the customer info belongs to Apple. Purchases made through any 3rd party, in the past, present, or future, will remain managed by the 3rd party – MacJournal has an automatic updating utility so you should get notifications of updates – but again, only when you launch MacJournal.