Need some clarification on what you are needing.
Credit Card information is never stored by us or our application. Because of this, it is not possible to take the credit card information and put it into QuickBooks. DataSynch also does not synch those fields.
ICCP allows you to charge the credit card from within Salesforce. The credit card is never stored, but rather always sent to Intuit for processing. After the Payment has been created in Salesforce, DataSynch can insert the payment into QuickBooks. If the Payment was done from within an Opportunity in Salesforce, and that Opportunity is an Invoice in QuickBooks, then DataSynch will insert the Payment into QuickBooks.
I am throwing a lot of information here, so it might be really confusing. Let us know if we can provide any more help.
Thanks