When you pattern or copy a group, be careful which placement dimensions you select to increment or vary.

If a feature in a group references another for placement (for example, a chamfer references the edge of a hole), you need to change only the placement dimensions of the referenced feature.

If you place features in a group separately, you must change the placement dimensions of each member. Otherwise, features with unchanged dimensions will have several copies superimposed on each other.

A feature created using the Use Prev option (to select sketching and reference planes) has its own dimension if the previous section plane has one. To pattern a group that includes this feature, you must select and modify these dimensions.