You can create associative or nonassociative hatches. Associative hatches are linked to their boundaries and updated when the boundaries are modified. Nonassociative hatches are independent of their boundaries.
To make a hatch associative, set the Associative property of the hatch object created to TRUE. To make a hatch nonassociative, set the Associative property to FALSE.
Associativity for hatch must be set before appending the hatch loop. If a hatch object is nonassociative, you can make it associative again by setting the Associative property to TRUE and re-appending the hatch loop.