I was one of the dummies that sent coins from Cryptopia to the new wallet
Below is the process I went through to get them back and am happy to say it worked without any issues!
1. download the old wallet (I did this on a separate machine that what the new wallet is running on)
2. create a new receiving address (this will be the OLD VERSION on the swap engine page)
3. copy the OLD VERSION receiving address to a notepad and then back up the wallet (we'll call this OLD.dat).. copy the backup to your desktop or other accessible location
4. close the wallet
5. delete the wallet.dat from the Appdata\roaming\score
6. copy the .dat from the new wallet (containing the receiving address that I sent coins to from Cryptopia) and pasted it into the \score folder (this receiving address will be the NEW VERSION on the swap engine page)
7. Wait like 30 secs and then open the wallet.. If the wallet is fully synced, you should see the full balance of coins that was sent from Cryptopia..
8. Send a small test amount (100 coins) to the OLD VERSION address that you created eariler and copied to the notepad
9. Wait for the transaction to get a couple confirmations
10. close the wallet
11. Copy the wallet.dat from the /score folder (this should be the .dat from the new wallet) and paste it on your desktop or somewhere easily accessible
12. Copy OLD.dat into the /score folder
13. Wait 30 seconds and open the wallet
14. You should see the 100 coin test transfer
15. Follow instructions here to perform swap:
http://scorecoin.net/swapengine.html