DMF/ Data import-export Framework : how are mapped the fields from AX data to the staging table for an export ?

Hi,

I am facing an issue when trying to export data from AX to csv and i would like to understand how is done the mapping between AX and the staging table when exporting data.

I am following this procedure for export with CSV : http://community.dynamics.com/ax/b/dynamicsnavax/archive/2013/04/05/data-import-export-framework-move-data-from-ax-to-another-ax-environment.aspx

But some fields are wrongly mapped from AX data to staging table, or are not present at all.
Some example the DMFRouteOperationEntity.OprNum or the bom.wmspalletid are wrongly mapped.
And process manufacturing fields (pmf prefix) are not included in the bomversionEntity by default.

So how can i fix this ?

Thanks in advance,

Pierre.