This works but according to document analyzer and the compare tool it made no difference.

InforceCounts:
LOAD BillSysCd,
InFClientName,
Autonumber(InFPolicyNumber,'InFPolicyNumber') as InFPolicyNumber,
InFFarmFlag as [~InFFarmFlag],
InFELSFlag as [~InFELSFlag],
MCD as MCDInF
// PolEffDt,
// Month(PolEffDt) as PolEffDtMonth,
// PolExpDt
FROM $(vQVDPath)InforceCounts.qvd (qvd);

Left Join(InforceCounts)
Load Autonumber(InFPolicyNumber,'InFPolicyNumber') as InFPolicyNumber,
IFDate
From $(vQVDPath)IFReferenceTable.qvd (qvd);

InForceIF:
Load InFPolicyNumber,
// IFDate as InFDate,
  MakeDate(Year(IFDate), Month(IFDate)) as InFMoYr,
// Month(IFDate) as InFMonth,
// Year(IFDate) as InFYear,
  If((IFDate>=AddMonths(Monthstart(Today()),-13)) and (IFDate<=MonthEnd(Today())),1,0) as InFRoll13Flag
Resident InforceCounts