Workcenter activities & Mat. doc number not updated in AFRU table in REM Backflush

Hi,

While doing REM back-flush in MFBF & MF42N tcodes, work center activities not updated in AFRU table.

But it was updated,while doing REM back-flush by clicking "actual activities" button.

Also AFRU-WABLNR field (material document ) not updated in AFRU table like process/production order confirmation

Before raising this question, I have checked SCN forum and not able to find answer.

Kindly guide me

Thanks & Regards

Swetha