Downloaded credit card transactions

Concerning downloaded business credit card transactions in QBO Plus.  When we accept the transaction, QBO automatically posts both a debit and a credit to the same credit card (liability) account.  This happens only with credits (money received).  We created a csv file with separate columns for "Spent" and "Received," with the zeros in the Spent fields and positive dollar amounts in the Received fields.  The file uploaded perfectly, but when we accept the transactions, QBO creates a "Spent" entry in the same account that offsets the received amount.  In the register, when we delete the spent transaction, the received transaction also disappears from the register.  Really, really strange.