Comment 84 for bug 293940

    yes, unfortunately, you are right, the layer information gets lost on a File | Import, it gets used only on a File | Open operation. I think part of the problem is that there is a potential conflict between different definitions of the same layer if you import multiple objects into the same drawing and each object has its own unique definition of layers.
    with respect to documentaion, there is a wiki page at
http://wiki.inkscape.org/wiki/index.php/TutorialsAndHelp
but I am not familiar with how to use it. The good news is that this can be done at any time, independently of the release of 0.47. Also, if there is a very specific issue that you think is important, you can issue a bug report and put a tag 'dxf' on the report using the link that says 'Update Description / Tags'. This will make it very easy for others to find this report if they are searching for it.
   on the subject of documentation, there is a new feature that I forgot to mention. The scale factor actually used in loading the .dxf file is now stored in the svg document. This is useful mostly in the case where you are using automatic scaling. It is given in a <desc> tag which is viewable in the XML editor and looks like this :
  <desc
     id="desc14">C:\WINDOWS\Temp\1_most_na_soci_mapa_no_blocks.dxf - scale = 0.055106</desc>
    In the case of manual scaling this will be identical to what you specified when loading the file. Also, as far as I know, this <desc> tag will be viewable only on a File | Load, not a File | Import.