In "Import Address Book Entries windows", there is this option:
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Write errors to file
Logs invalid records in a file. The log file is called
import-file name.ER*. You find this file in the same folder as the original
import file. This option is not available when importing dBASE files.
But I don't think that ER* log would record useful related info in your case. There are some general logs kept by Maximizer, you might explore them to see any luck or hints. Go to Admin module > Diagnostic tab page to change the log levels if neceessary, have luck!
Diagnostic
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Diagnostic
Allows you to control Maximizer log settings for each module.
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If you change the log settings for the Email Service (CMGR-Email), PrintFax Service
(CMGR-PrintFax), or Outlook Sync (MOCI/MECI) you
must restart the service(s) for the changes to take effect. Restart these
services from Windows Control Panel > Services.
Windows folders for Maximizer logging and current Maximizer installed
location
Log Folder
Click the ellipsis button and select a directory for the main
Maximizer log path.
Installed Folder
Displays the location of installed Maximizer files on the
current computer.
Module level preferences
Preferences for this module
Select the module to which you want to assign log level
settings.
Module log folder
Browse to the folder where you would like the log files stored.
The default is the "Logs" folder in the Maximizer program folder.
Maximizer log level