I import transactions from my CC statements and LOC accounts by using exported CSV files. The import dialog uses the terms "Withdrawal" and "Deposit" to indicate whether the transaction was a debit or credit. I found the terms a bit ambiguous when it referred to a liability account because, in my mind, a withdrawal could indicate a decrease in credit and a deposit could indicate an increase in credit.

I recommend that it should be possible to choose the wording for these column headings to debit/credit and that when a liability account is chosen the transactions are properly added as a credit or debit.