MF47 - post-processing of backlogs from backflush

In  MF47, i'm unable to delete selected records of materials, as it displays the error msg RM887 - changed REM profile regarding generation of postprocessing records.We are in 4.7, had also implemented the OSS correction and executed the report "ZINCON_REPROC". Though this report says it is deleted, the entries are still showing up in MF47.Appreciate your help, if anyone had encountered a similar problem.thanks in advance.