Do you have any export buses that are set to both craft and export existing items?
I have had problems with this in Monster 1.0.9. If that is the case, try to have separate export buses, with either only "always craft" or only exporting existing items.
I have had problems with this in Monster 1.0.9. If that is the case, try to have separate export buses, with either only "always craft" or only exporting existing items.