collected items keep appearing in rooms after loading from save

[retroactivegames]

hey all!
I've been working on a remake for Casper for the ps1, sega saturn, 3DO, etc. Im about 95% done. Im just hitting a snag with saving and loading from an INF file. All of my attributes and player position and current room I'm in saves. However, when I save the game and load from said save, I cant get the game to remember which items I've already collected (ie, which instances have been destroyed in a room, and which remain). All reload. Obviously this is a problem as opened doors and chests, etc, will also all re-appear. heres my script for saving:

save script (runs on pressing spacebar in the player object)
var file,inst_num,n0,n1,inst;
file=get_save_filename("save","Savefile.inf")
if (file_exists(file)) file_delete(file); //SAVES GAME/OVERWRITES

ini_open(file);
var saveroom = room;
inst_num = instance_number(saveinstance) ;//THIS IS A PARENT OBJECT- ITEMS ARE CHILDREN.
n0=0;
n1=0;
while inst_num >0{
inst = instance_find(saveinstance,inst_num-1)
ini_write_real("save",string(n0)+string(n1),inst.object_index);
n1+=1;
ini_write_real("save",string(n0)+string(n1),inst.x);
n1+=1;
ini_write_real("save",string(n0)+string(n1),inst.y);
inst_num-=1;
n0+=1;
n1=0;

}
ini_write_real("save","room",saveroom);
ini_write_real("save","brass keys",global.brasskeys);
ini_write_real("save","health points",health);
ini_write_real("save","gold coins",global.gold);
ini_write_real("save","iron keys",global.ironkeys);
ini_write_real("save","iron weights",global.ironweights);
ini_write_real("save","x location",player.x);
ini_write_real("save","y location",player.y);

HERE IS THE LOAD SCRIPT, runs from main menu by pressing load button and selecting save INF file when prompted;
var file,n0,n1,inst,xx,yy;
file = get_open_filename("save","Savefile.inf")
{
ini_open(file);
n0=0;
n1=0;
inst=0;
xx=0;
yy=0;
while ini_key_exists("save",string(n0)+string(n1)){
inst = ini_read_real("save",string(n0)+string(n1),0);
n1+=1;
xx = ini_read_real("save",string(n0)+string(n1),0);
n1+=1;
yy = ini_read_real("save",string(n0)+string(n1),0);
instance_create(xx,yy,inst);
n0+=1;
n1=0;
}
var LoadedRoom = ini_read_real("save","room",0)
global.brasskeys= ini_read_real("save","brass keys",0)
global.ironkeys= ini_read_real("save","iron keys",0)
global.gold= ini_read_real("save","gold coins",0)
health = ini_read_real("save"," health points",100)
global.ironweights = ini_read_real("save","iron weights",0)
player.x= ini_read_real("save","x location",0)
player.y= ini_read_real("save","y location",0)

ini_close();

room_goto(LoadedRoom);

audio_play_sound(gamerestored,0,false)
}



ini_close();
audio_play_sound(gamesaved,0,false)

and Ive uploaded a screenshot of the INF text file! I cant figure out whats wrong exactly. Any viable solutions would be greatly appreciated!