How to reproduce

• Do an export
• In the zip archive, edit a XML file corresponding to a page, and write a syntaxe error (delete a end XML tag for example)
• Select the archive to be imported

The import fails to read the invalid XML file, and the error is listed in the report email.
The error concerned only one page, but the whole sitemap is not imported. What a pity, We could import the other pages, no ?

It's annoying also because we receive a success email whereas the whole sitemap is empty.