object schedules getting reloaded in new level

I have this function which clears up everything in a level.

function cleanUp() {
  
   %count = $levelObjSimset.getCount();
   for(%i=0;%i<%count;%i++) {
      %objId = $levelObjSimset.getObject(%i);
      shredObj(%objId);
   }

   $levelObjSimset.clear();
   $levelObjSimset.delete();
   $levelObjSimset = new SimSet(levelObjSimset);
}

function shredObj(%objId) {
      %parent = %objId.name;
      
      cancel(%parent.growingHandleAlpha);
      cancel(%parent.growingHandle);
      
      
      %parent.icon1.safeDelete();
      %parent.icon2.safeDelete();
      %parent.icon3.safeDelete();
      %parent.icon4.safeDelete();
      	
      if(isObject(%parent)&&stricmp(%parent.class,"waterbody")) {

            %cnt = 0;
            %wp = %parent.base.position;
            %tp = tilemap1.pickTile(%wp);
            tilemap1.setTileCustomData(%tp, "0");
            
            for(%i=0;%i<21;%i++) {
               %wp = %parent.base[%cnt].position;     
               %tp = tilemap1.pickTile(%wp);
                        
               tilemap1.setTileCustomData(%tp, "0");
               %parent.base[%i].safeDelete();
               %cnt++;
            }
            
            %clones = %parent.clones;
            //echo ("Clones: "@%clones);
            //echo ("Deleted Object: "@$prevObject);
            for(%i=0;%i<%clones;%i++) {
                %parent.bluebg[%i].safeDelete();
            }
      }
      %parent.removeFromScene();
      %parent.safeDelete();
      sceneWindow2D.remove(%obj);
}

But when I load another level, the schedules are still not canceled and leads to more(undesired) objects to be added to the new scene after completion.

Question 1:
Shouldn't the schedules automatically get canceled when the object is deleted?

Question 2:
I explicitly canceled all object schedules in the function shredObj, so why are they still in the new scene?