This still gives a number of warnings, probably related to the fact that it originally comes from Adobe Illustrator and has used all kind of things specific to that. Not doing anything to those in this ticket. 1) keeping this simple update of inkscape format update to silence modern inkscape about complaining about it. 2) Don't really know what should be done about those. If someone does, please advice at least.
Update cossack.svg to inkscape 1.1.1 format.