PDF Bookmarks Generating in Wrong Order

I am using Aspose PDF 9.7, using the XML method. I'm also using Visual Studio 2010, and .NET 4.0.

I have discovered a problem that occurs when using the IsBookmarked attribute of the root Pdf element in the XML method.

If you have a section with several different level headings (1, 2, & 3 in the sample provided), and then a subsequent section has levels 1 and 3, but no level 2 headings, the level 3 heading appears under the level 2 heading from the first section in the bookmarks.

I have attached a sample XML file, and a screen capture (with notes) showing what I'm seeing.

Thanks

Chris