Import and Export XAR will lost tree hierarchy?
I used to have a multi level tree hierarchy inside my wiki space.
But, when I import it, all the pages are flatten as the direct children of the space
WebHome.
I use the default export tools to export a large 100M+ xar file under Xwiki-6.3
I use "Admin Tools" application to import large xar file under Xwiki-7.3.
Is it incompatible with tree hierarchy?