Date as KeyFigure for 0ACTOPENDT, 0ACTFINISHK

Hi

i'm bulding and ODS from PP infosources 2LIS_04_P_MATNR and I notice the record update into ODS is become wrong because two date infoobject (0ACTOPENDT, 0ACTFINISHK) are defined as Key Figures. For this reason, the system treated them as key figures display 20,060,517 rather than 20050517, wondering why Date was set to Key Figure ? And how can I correct this ?