Make sure that you have PokerStars configured to save tournament summaries, and PT4 to read them. Check the
PokerStars Configuration Guide for details.
Also be sure to wait for the final hand to complete before closing the table window so that the hand is written to the hand history file and imported, and the summary contains full information.
If you have a tournament which doesn't import correctly from the complete hand history and summary files please attach the original hand history and summary files to a
Support Ticket and tell us what is wrong, so that we can investigate for you.
By default the original hand history files will have been moved to the Processed folder, which you can access via File > Open User Data Folder in the PT4 menu..