DTW Line Total and VAT Total

Hi.

I'm using DTW to import sales order data from Magento. We are having some problems relating to our website rounding slightly differently to SAP BO and sales orders can be incorrect to Magento by 1p.

We currently import the item code, quantity, line total, & VAT group.

SAP takes this information and works out the VAT total for itself, which is sometimes wrong as mentioned previously. Is there a way I can import the line total and tell SAP what the VAT amount was rather than have it work it out for itself?