Gradebook Group by Category lost during Import from Site

When importing a site into another, and choosing "replace my data", group by categories information is lost. The user must have Group By Category on, and then import. In the second site, Group By Category is unchecked after import.

The copy of the gradebook must contain the same gradebook items in the same order as the original gradebook. If there are categories, the order must include the order of the categories as well as the items inside of categories.

DOCUMENTATION:
The Gradebook settings "Group by Categories" is a default setting for all Gradebooks using the category feature. If you Import a category Gradebook into a Gradebook tool which is "blank", that is, in a no-category state, its default setting would not include grouping by categories. At the end of the Import, the user's settings whether to group by category or not to group by category, that setting is applied when the Reset button is clicked, or the user next returns to the Gradebook.