[Therion] KML files

Is there a simple way of generating KML files which specifically excludes the pins for entrances etc? I just want the centrelines. I know that I can do this by commenting out all the relevant lines, but that's a bit of a pain when your dataset has many dozens of these and you have to go back in and replace them when producing 3d or other outputs. Graham graham.mullan@coly.org.uk<mailto:graham.mullan@coly.org.uk> +44 7887 637064 or +44 117 9502556 or +33 5 53 51 19 15