Centering a nested object to the stage

hoy hoy,
I have a picture of a mine which is nested within an object, nested within another obect. Now what i want it that on the keypress of shift, i creates the mine image at the same postion of the tank.

The issue is that the main obect that is nesting the mine moves, thus not creating at the the center, rather on that postion of the object.

here are how my images go by instance names;

  1. Tank Stays in the center
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  2. Land (moves) – 2b. map – 3b. All objects that hitTest
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    2a. Objects
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    [color=red]3b. All the objects that dont get hit(in here is my mine.)[/color]