The table EcoResCatalogControl is associated with product attributes bound to procurement categories. An import of these “Product category attributes” through the entity EcoResProductCategoryAttributeEntity leaves the attributes dysfunctional: the internal table EcoResCategoryAttributeLookup is left out of sync and the new attributes remain invisible in the product master. Only an EcoResCatalogControl entry triggers the sync. The only form where the EcoResCatalogControl is editable and visible is the Procurement category form, but an attempt to update the flag fails with a “Missing reference” error: the systems expects the EcoResCatalogControl record to exist already. Dead end.

See my blog http://erconsult.eu/blog/electronic-reporting-in-data-migration/