Funds Management - Internal Orders/Investment Orders

Hello -

Case1 - I have an order ( No-1001) which is to be settle to Cost Center (Zcctr1).

When I post expenses to the order through FI , system looks for Fund Center - as of now I am manually entering the fund center. My problem arises when I am setling the Order, System is looking for fund center again for the same cost element to whcih expenses already booked and budget is already consumed. How is this generally handled.

Is it possible to derive the Fund center from Responsible cost center in th Order.

Case2 - We also have Investment Management active.

An internal Order is created for the purpose of investment measure and the budget is allocated from the appropriation requests, meaning the budget is controlled through internal order budgeting process and there is no need of Funds mangement's AVC . We dont need any fund center to be assigned at the time of Purchase order How can I handle this situation.

Thanks

Chris