Hi,
The registry key HKEY_CURRENT_USER\Software\Zimbra\ErrorThreshold is used to control the number of errors that stops the migration/import. Please see bug 17395 (
Bug 17395 - Error Threshold Registry key for all migrators and importers).
This registry key defines the max errors before stopping. 0 means never stop. The default is 4. Also see bug 10751 (
Bug 10751 - Make a registry key for the max consecutive errors before stopping migration.).
Regards,
Manish