By default, SQL Defrag Manager only displays the last 1000 actions on the Recent Activity pane. Starting with version 3.5 users can change this value in the SQL Defrag Manager Console or trough the command line.
Changing the value on the SQL Defrag Manager Console
To access the Recent Activity Configuration dialog, click Recent Activity Configuration on the Command Menu of the SQL Defrag Manager Console. To display the Command Menu, click the SQL Defrag Manager icon in the top left corner of the SQL Defrag Manager Console as shown in the following image:
Changing the value on the Command line
Open the command line and use the following command.
sqldefragc.exe -set -maxIndexes <value>