It looks like that you sent with the old client and then loaded the new client. -zapwallettxes should fix (coins will be back in original address)
What's the difference in the client? I SENT coins FROM OFFICIAL SmartCash POOL (I don't need to know WHAT client YOU USE THERE)
No one coin don't get back in original address (my mining adress on YOUR pool). THEY JUST DISAPPEAR. Can your understand this? You (as dev. or some) can check this. You MUST check this situation. Cause it is not single situation.