catia core and cavity design

hi i have a proplem with catia
after Defining the Main Pulling Direction
i get 2 set geometrique
matrice and poinçon so the proplem is the surface are isolated from the original model so if i want to make adjustement to my model i need to adjust the surface manually but some time it take a lot of time and effort
i want to know if there is a way to make a connection betwene the model and the surface so if changed somting in my model the surface change automaticlly

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