Just curious, as I've never experimented to find out: In a DXF layer name, is it necessary to always put the p for the decimal? Will (for example) z19 be recognized as z19p0? Or do you explicitly need to put the p0?
For the record, it is not necessary to have the p in the layer name. z6 accomplishes the same thing as z6p0 for instance. CN adds the decimal and some zeroes.