user38168: An online store recently received a payment via a wallet-to-wallet BTC payment. But after a while the total_received value went down to zero on blockchain.info. Now the address cannot be sweeped as there is no balance so the merchant assumed that the money is lost/stolen.
Tradeblock seems to have more details for this transaction:
https://tradeblock.com/bitcoin/address/1L1MSa36vaSeo8myBcGfGA3UddGDitZXai
Here's another similar one "suspected" from the same user:
https://tradeblock.com/bitcoin/address/1KsVJ1ySWVmVD5uci4mSuT98Uj65VpEzD
(icon at the rightmost column of each transaction has more details)
Can someone pls explain the anatomy of this - how to interpret and how to rectify (if at all possible).

user31586: Conflicting transactions are simply two or more transactions that spent the same UTXO in its inputs (i.e. doublespending).
The only remedy is to not treat a transaction as successful until it has a number of confirmation that satisfies you. 
It is impossible to recover from a successful doublespend attack should the conflicting transaction be included in the blockchain.

38168: <p>An online store recently received a payment via a wallet-to-wallet BTC payment. But after a while the total_received value went down to zero on blockchain.info. Now the address cannot be sweeped as there is no balance so the merchant assumed that the money is lost/stolen.</p>

<p>Tradeblock seems to have more details for this transaction:</p>

<p><a href="https://tradeblock.com/bitcoin/address/1L1MSa36vaSeo8myBcGfGA3UddGDitZXai" rel="nofollow noreferrer">https://tradeblock.com/bitcoin/address/1L1MSa36vaSeo8myBcGfGA3UddGDitZXai</a></p>

<p>Here's another similar one "suspected" from the same user:</p>

<p><a href="https://tradeblock.com/bitcoin/address/1KsVJ1ySWVmVD5uci4mSuT98Uj65VpEzD" rel="nofollow noreferrer">https://tradeblock.com/bitcoin/address/1KsVJ1ySWVmVD5uci4mSuT98Uj65VpEzD</a></p>

<p>(icon at the rightmost column of each transaction has more details)</p>

<p>Can someone pls explain the anatomy of this - how to interpret and how to rectify (if at all possible).</p>
 31586: <p>Conflicting transactions are simply two or more transactions that spent the same UTXO in its inputs (i.e. doublespending).</p>

<p>The only remedy is to not treat a transaction as successful until it has a number of confirmation that satisfies you. </p>

<p>It is impossible to recover from a successful doublespend attack should the conflicting transaction be included in the blockchain.</p>
