Project Budget

Hi,

i am using project costing 11.5.9 i would like to detete the approved cost budget assoicated with a project has been created recently(i.e i don't need any budget assigned to this project) or copy a budget from another project. 

is't possible, any body have an idea. Reason: i have create  a three project and i haven't assigned any budget to those projects (this will allow unlimited budget), by mistake i have assigned a budget to one of them so it become with limited budget so what i need is to delete the assined buget. i have deleted the budget on the daft budget but i could'nt move it to current budget.