[MW:15827] PQR with Filler wire ER316L Flux SA Cs2 Cr DC can e used on SS304L base metal

Dear Experts   PQR with Filler wire ER316L Flux SA Cs2 Cr DC; base metal base SA 240 SS316L. Can we use this PQR to weld base metal SA 240 SS304/304L without changing Flux with 308L filler wire! Or re-qualification is required.   Thanks & regards Ali Mhaskar, UAE                                Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments.  Check your e-mail security settings to determine how attachments are handled.