Fix export if any operation has category -1 "None";
Fix export if any operation has category -1 "None";

rlustin/kresus,bnjbvr/kresus,jankeromnes/kresus,ZeHiro/kresus,bnjbvr/kresus,bnjbvr/kresus,ZeHiro/kresus,ZeHiro/kresus,jankeromnes/kresus,jankeromnes/kresus,rlustin/kresus,rlustin/kresus,ZeHiro/kresus,jankeromnes/kresus,bnjbvr/kresus,rlustin/kresus