To convert OST file journals and tasks to a PST file, you can use the Sysinfo OST to PST Converter. This tool allows you to select OST files and export all mailbox items, including journals and tasks, into Outlook PST format with 100% accuracy. It supports converting single or multiple OST files at once and maintains the original folder structure. You can preview the mailbox data, apply filters like date range, and choose to include or exclude attachments before conversion.
Read more: https://www.sysinfotools.com/ost-to-pst-converter.php