On 29-10-2019 14:21, Hans Hagen wrote:
> You mean: produce pdf layers? Well, imo usage of <g> is so messy and
> inconsistent that it doesn't pay off, apart from overhead. But grouping
> as way of combining properties is supported.
> 

the cause might be outside context.
e.g. it might be that the layers/grouping are dropped by inkscape while
importing the pdf.

if i export the original svg as a pdf within inkscape, then re-import it
again, the layers/grouping are gone too.

not urgent, as many other paths exist ;-)
.F