Doodad is hidden when playing on classic mode but not on Reforged mode :-/

[Dinodin]

I played my friend's map with my friend but with some edits made by me. The original map works fine both for classic and Reforged mode but my map with some edits, the Ore Pile seems to be invisible and only shadow in classic mode but in Reforged mode it is not invisible. Pls can anyone figure out the cause of this? Is it because of any of the edits I made to the map? Could it be because I added "Is terrain walkable-system"? Pls someone help!

 

[Duckfarter]

Go to the object editor and change Art - Model File - Has Lightweight model to false

 

[Dinodin]

Go to the object editor and change Art - Model File - Has Lightweight model to false

It already was on false.

 

[AtivEnergy]

I put as [db]east said "Art - Model File - Has Lightweight model to (false)" and work for me.
In your attachments - the map has the Lightwight model on (true).

Edit: Put the Lightwight on (true), save the map, close the editor. Open the map again, put the Lightwight on (false).

 

[Dinodin]

I put as [db]est said "Art - Model File - Has Lightweight model to (false)" and work for me.
In your attachments - the map has the Lightwight model on (true).

No it hasn't Lightwight model on true it's been on false all the time.