Problem: The AutoComplete Polygon task may alter multipart region features
When using the Auto Complete Polygon task to create a new polygon feature in a coverage, multipart region features affected by the addition of the new polygon may become single part features.
Solution or Workaround
Using the AutoComplete Polygon edit task will split up multipart region features that are within the affected area. You need to need to either rebuild the region subclasses, or merge the disjoint region features after using this task.