There are two separate issues here. On one hand, you want to know how to migrate your wallet from a very old client version to the current one. The second issue is that you are having trouble syncing 8.5 (I am guessing because you can’t find peers, but I’m not sure without additional information). First of all, copy your wallet.dat file as a backup, make sure to check both ppcoin and Peercoin directories and backup any wallet.dat files you find there (just copy and paste to desktop with a new name). Next, delete the entire Peercoin directory. Now, start the 8.5 version and let it sync. When that is done, turn off the client, copy the wallet.dat file back into the Peercoin folder, and turn the client back on again. That might work, or we might have to do more tricky things, but try that for now.