The following lines are added to excludedupdatetask.properties:
# Adds UIDs to tasks.
!com.openexchange.groupware.update.tasks.TasksAddU idColumnTask
This allows easy deactivation of that task.
# Adds UIDs to tasks.
!com.openexchange.groupware.update.tasks.TasksAddU idColumnTask
This allows easy deactivation of that task.