Comment 1 for bug 739036

Is the problem that the files do not show up at all in zim or is there a problem with the format of the files. Upgrade will just add some headers etc. to the notes, but zim should be able to open files that do not have these headers.

To make zim check for new files you can run "Tools -> Rebuild Index" (but see bug #704167). If this fails you can also force it by running "zim --index" from a terminal.

Also you may want to check the rules for file names here: http://zim-wiki.org/manual/Help/Importing_external_files.html