Problem sending Zcash

I have a problem

I was sending some zcash from 4 different Taddresses on 4 different PCs to one Taddress, as it is described in zcash wiki on GitHub.

Like this:
$ ./src/zcash-cli z_sendmany "$FROM_TADDR" "[{\"amount\": 0.8, \"address\": \"$TO_TADDR\"}]"

All operations were successful, and all had their TxID.
But when I check the balance of the destination Taddress, I see that only one transaction was successful.

I've checked all 4 TxIDs in the blockchain explorer and found that only 1 of them was in the chain.
Then I checked the balances of the wallets from which I sent the money, and the balance was 0.

What can it be? Any help.