cannot see imported file messages
in my old windows xp computer i successfully imported my messages and all subdirectories from outlook express to thunderbird 45.8.
however, on my new windows 10 computer i failed to import messages to thunderbird 60.3.1. following https://support.mozilla.org/en-US/kb/moving-thunderbird-data-to-a-new-computer
i could not see all my subdirectories of imported outlookexpress.sbd add on importexport tool does not work on new thunderbird versions. on old thunderbird version it only imported inbox and sent files but not all other personal file messages. changing the setting directory of local files to %\AppData\Roaming\Thunderbird\Profiles\xxxxxxx.default\Mail\Local Folders\import Outlook Express.sbd revealed all the subdirectories but still i cannot see all the messages inside files, although they do exist in the same fold. any suggestions to solve the problem?