Exclude from Summary - Split Payments

Hi,

When making a bill payment, I exclude these from the summary as they do not factor into my budget. However, where I then split the bill and receive income for a portion of it, this income cannot be excluded from summary. Therefore I have income included in my budget which should not be.

As all of my bills are split with a flatmate it means I cannot use the budget feature properly at all, please assist

Thanks
Joe