Spells – What happens if the element that created a magical effect ceases to exist?

Suppose I have an object bearing two Imitation Charges (Creation 30) as an automatic spell (Prometheum Exxet).

Using an Imiter load, I duplicate the object.

By using the Imiter charge on the object that I have duplicated, I duplicate the original object.

I continue to duplicate the original object with its duplicates for an hour.

What happens when the timer runs out on the first duplicated object?