Bin Content - Bin Code Deleted when Inventory is 0

Hi Experts,

I used Manufacturing Module.
I specified Bin code for every item in the Bin Content Table.

But when i consume Material from the inventory when in the inventory the Quantity is 0 the Bin code for the Material is deleted. I want to stop this.

Because when next time the materials come in user need to know what was the last Bin so they can put material in the same Bin code.

Where i have to comment in the code so it cannot delete Bin code when inventory in that Bin is 0.

Thanks