DMT and uploading open sales orders - 905.700C

I am trying to upload open sales orders using DMT (in TEST).

I have managed to get it to upload headers and lines with the right quantity and prices, but it will not calculate the (Australian GST) tax for each line.

It creates the releases automatically from the line data. When I manually add a line it has no tax either, but an identical order entered manually is fine.

Does anyone know what field might be missing the price or extended value for the tax calculation? Everything looks right on the screen.

- Neil Buckman