Ghost balance - can someone explain this?

I see some balance when using z_gettotalbalance, but both transparent addresses are empty. Can someone explain me this?

root@ltcminer:~# zcash-cli getaddressesbyaccount ""
[
  "t1Y9qpNDX5pZn2f2RK7zRxTFjPUt2CMdxhm",
  "t1dJBmCEXicHWWwat2jRpivvj9Da1Cdbrr3"
]
root@ltcminer:~# zcash-cli z_getbalance "t1dJBmCEXicHWWwat2jRpivvj9Da1Cdbrr3"
0.00000000
root@ltcminer:~# zcash-cli z_getbalance "t1Y9qpNDX5pZn2f2RK7zRxTFjPUt2CMdxhm"
0.00000000
root@ltcminer:~# zcash-cli z_gettotalbalance
{
  "transparent": "0.10997313",
  "private": "0.00",
  "total": "0.10997313"
}