DIXF creating additional record with blank ItemDataAreaId (AX 2012)

Hi Experts,

I am using DIXF to import released product. Uploading data is fine without any error; however, an additional record with blank ItemDataAreaId is created for every item in below tables.

EcoResTrackingDimensionGroupItem, EcoResStorageDimensionGroupItem, InventItemGroupItem, InventModelGroupItem

Please guide.

Thanks,

N.Sridhar