Answer:

Some transactions may appear as duplicates because the exchanges may have split the order and executed more than a single trade on the same day to fill the order. This can happen with both Limit and Market orders. Double check your exchange or wallet transactions to verify if the transactions are real or not. In some instances (ie Bitrue) we are aware that there is a bug with older accounts or with a larger number of transactions. We are working to fix this issue. However, the duplications should not affect your coin balances.