Let for example the SMS be as
Visa1234 2016/05/01 23:59 ATM cash withdrawal: -10,00 USD;
Budget Blitz can create two transactions in this case, first for card's outcome and second one for cash income.
Check the SMS import tune of the Visa1234 account. It should containg transfer keywords, "cash withdrawal" for example.
In the Cash account put "ATM" keyword to the account keywords and keep account Id empty.