The split transaction feature is the way to do it. Once split you can re-categorize the transaction as cash or whatever. Works great with stores like Walmart and Target where you might you might have Groceries, Clothing and Cash. The only issue I have with split transactions in NeatReceipts is during an export to Quicken the split transactions become two individual transactions, which defeats the purpose of splitting the transactions.
There is an excel script that does the split transactions correctly, but it adds a few extra steps and setup. I'll post it when I find the message on Neatco.