change pointer perfomance issue(bd22)

Hi,

we are using message type HRMD_A to transfer the employee change data using the program RBDMIDOC. we are checking two table BDCP n BDCPS, but because of large number of data we r facing a perfomance issue here. I read in one forum about transaction BD22 which deletes the change pointer from these tables, but is it safe to use? and also what is the obsolete change pointer?

Thanks in advance for ur inputs.