=IF($D13="#",IF(YEAR(DATEVALUE(J13))&TEXT(MONTH(DATEVALUE(J13)),"00")>YEAR(DATEVALUE(I13))&TEXT(MONTH(DATEVALUE(I13)),"00"),IF(NOT(ISNA(MATCH(F13,'Orders'!$A:$A,0))),IF(VLOOKUP(F13,'Orders'!$A:$AH,MATCH(J13,'Orders'!$A$7:$AH$7,0),0)=K13,TEXT($B13,"000000000")&TEXT(DATEVALUE($J13),"mmm"),""),""),""),"")