ME87 and ME88

Hi

We are on EHP 7, SAP_APPL 617, we have not gone for archiving any more since 2003,

now due to the performance problem, we want to aggregate the EKBE need advice on the tcodes and functioning ME87 and ME88,

Is there any option available for MASS transaction to do so?

how to aggregate PO history having if PO/SA is having multi line items?

Is there any program to aggregate the same in one go? --gone through the note 574494 but its valid till 605 release,

Is there any prerequisite to do the aggregation/deaggregate?-- gone through Note 382797 which will be taken care,

Please share your experience and valuable advice

Thanks