L2 1.5.6 Historic Volume Model - Import Error

Hi All,

I've been reading up on the forum and I have followed most of the advice given but I still seem to have an issue importing data into DAT03 Historic Volumes.

The data seems to be ignored when I import. Has anyone else had this issue? I don't believe it is mapping related as SKU, Account and Week all work properly on tabs 2-4.