Select this check box to copy the complete budget (cost) structure from the source project to the destination project.
With this check box selected, all budget lines in the table in the Budgets section are selected. You can, however, deselect lines that are not to be copied by clearing individual check boxes (in the Budgets section).
Budgets linked to tasks that you have selected to be copied to the destination project will be copied automatically. Parent tasks and budgets are also copied. Tasks linked to budgets that you have selected are not copied automatically.