Export object id in DXF from Inkscape

Question

I have to integrate Inkscape drawings into QGIS. In order to do so, I export the drawings in DXF format from Inkscape. There's no problem to georeference them in QGIS, but I would like to know if there is a way to export path ids from Inkscape? That would enable me to reconstruct properly geometries (that is, create polygons) with this attribute, since the export create a bunch of lines for each closed object ("path") from Inkscape. The st_node/st_polygonise in Postgis can't work for me, since my objects are overlapping, and polygons are created for each intersection.