Budget checking

Hi, i have some questions about de budget checking process.

If a order goes on hold in this period (11) and the hold code is released in a next period (12), in which of these will be commit the budget?
If the budget approver are in the approval route which program should be use to approve monetary and budget P43081 or P43070?
Why It is not recommended to have the same person responsible for both roles (Budget approver and monetary approver) ? Doc ID 625444.1, Approver level setup, question 2.Program P43060 do not shows the message when an order goes on hold by budget checking, is it correct?