( Solved ) How do I Load Array tile ID with -1 ( empty ) into a Tilemap ?

Hi All

Edited :

I Solved this deleting ( erasing ) the tiles just before import , but I dont know if this is the correct way , if someone knows why this happens let me know .tks

Im saving the positions of the tilemap into an array and load into another .

When I load the first time it works with data in array , -1 ( empty ) , but when I erase it , its change in the array , but when I load it again doesnt work with data -1 ? I dont know why ? Only works for the first time

Can anyone help me please

Link

dropbox.com/s/asiu9gz00k1kpm6/tilemaps.c3p