Associative hatches are linked to their boundaries, and update when their boundaries are modified.
Non-associative hatches are independent of their boundaries.
To set hatching to be associative, check Associative Hatch on the Display page of the Drawing Setup (Options / Display).
To break the link between an associative hatch and its boundary, select both the boundary and the hatch, and select Dr Anchor Xion99269 Xion99269 opDrop Link from the Inspector Bar or local menu.
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