I tried to use the old wallet, pos blocks are not shown up on cinnichain.info
if you didnt use a backup/virgin copy of your wallet.dat then the orphans will stay logged in your wallet.dat from the other client. just ignore it or you can export the privkeys and import into a new wallet.dat to clean it up.
you will not lose any coins, and will be able to restake the "orphans" by leaving it open.
I just tried to export privkeys and import into a new wallet and i thought I had backed up my wallet.dat yesterday
I am a noob and it turns out it was an old backup of my wallet.dat, does this mean that any coins i sent to addresses generated after the backup are gone forever?