Duplicate Items in the Imported Directory Structure

This is an example of a directory structure I imported:

exdir

subdir

file1.htm

file2.htm

index.html

Where the filename index.html is listed as a "Default document" in the import profile. In the import result what I wanted and expected was a single "subdir" item in the root menu that when clicked on would display the "index.html" file in the content block, and expand the "exdir" menu item to display the child items "subdir" and "file2."

What I got were two identically named "exdir" items in the root menu as shown in this structure:

exdir

file2

exdir

subdir

file1

When the first "exdir" item is clicked on I got the index.html import in the content area as expected. But the menu expanded to show only one child menu item, and this was "file2." The "subdir" submenu item was missing. When the second "exdir" root menu item was clicked on a default page appeared and the missing "subdir" child item appeared in the expanded menu.

The expected menu structure I did not get is:

exdir

file2

subdir

file1

I need to know how to make the menu import as I expected. I do not have time to manually combine the children of two identical menu items everywhere they will appear in the import.

When the "subdir" menu item was clicked on it did what was expected. A default page appeared in the content area and the menu expanded to show the "file1" item.