I think I have the same question.
So I bought PTS a long time ago (when it was still called "protoshares", and then held them in my wallet. They have never moved, and they hit ever single snapshot date. Then I imported them into KEYID-DNS and received my balance there. The BTSX -> BTS transition went smooth and continued to show the same balance. So far so good!
Then I downloaded 0.5.1, all is still well. It now allows me to import JSON wallets, so I imported the JSON wallet from DNS (MYUSERNAME-DNS), and it said that it imported fine (But didn't increase my balance). *** All still okay though because it's vested, right? ***
* FYI: It's important to note that I have 2 different registered usernames between the BTS and DNS blockchains. Hence the USERNAME-BTS and USERNAME-DNS references above and below.
Then I used "wallet_collect_vested_balances USERNAME-BTS", which imported the first day of the vested balances. Awesome!
QUESTION 1: Is that it? Since I have 2 different account names between DNS and BTS. I only had to run "wallet_collect_vested_balances USERNAME-BTS" one time for the BTS blockchain right, and not for the DNS blockchain. I ask because I could check the balance of the USERNAME-DNS just fine, but when I tried to collect the vested balance it gave me an error (unknown receive acct). As long as I had already imported the "USERNAME-DNS" json wallet I should now be receiving vested balances for both. Correct?
QUESTION 2: Anything else that I need to reclaim? Anything else big that I'm already missing out on? Music? Play? Sparkle? RandPaul? Vote? NewPTS?
QUESTION 3: Aside from just sitting back and trying to read the forum / reddit, I don't fully know what it means to be a delegate. Should I be voting or become a delegate or something? Am I missing out on potential interest that I could be earning? Any links / info would be appreciated!
QUESTION 4: I picked up a few extra DNS from BTER that I couldn't get transferred over in time. Anyone know how they are going to distribute vested interest in DNS that are stored there? Daily? Lump sum 2 years from now?

Thanks!