Hi,
CJ30->Open Project->Select the required WBS elements->Menu bar->Edit->Copy View->Select Option 5(Planned Total)->Give 100 if asked for percentage->click on continue icon.
Check if your Planned values will get copied to Original Budget. Then select Budget column->Edit->total up->save.
Also you can use IMCCP3 tranx to copy plan values as suggested above.
Regards
Shishir