To Delete planned costs

Hello All,

I want to know if there is any standard way to delete planned cost? let me tell you that- I have used KP90 and KP91 and  yes it deleted plan cost but it also deleted all CO object including rates which were maintained in KP26.

I need you help to know if there is any Transaction to delete planned cost or planned value which is seen in CJI4(delete plan cost line item) for a particular order, CC or WBS.

Thanks and Regards,

Roshan