Steps to deal with reloading the selective data after deleting the requests

Hi All,

Could some one explain, how to proceed to reload the selective data from a OLTP system with following conditions.

1. Deleted a request from a cube because of wrong/errors

2. The data does not exist in PSA

3. To be loaded data exist in OLTP R/3 system.

I will appreciate your help.

Thanks

Laxman