Import contacts - truncate too long fields

Hi,

I'm using Contact Managment to import contacts from csv file. The problem is that Job title allows text not longer then 50 characters and Business phone allows text not longet then 26 characters. Module is not customizable so I can't update fields length. So I decided to use global events to truncate some texts. Code is below. It works when adding new contact via CMS, but ContactInfo.TYPEINFO.Events.Insert.Before event doesn't work when I use import from csv. Which event should I use to catch it?

using CMS.Base;
using CMS.ContactManagement;
using CMS.DataEngine;

[BlueModusCustomEventHandlers]
public partial class CMSModuleLoader
{
    private class BlueModusCustomEventHandlers : CMSLoaderAttribute
    {
        public override void Init()
        {
            ContactInfo.TYPEINFO.Events.Insert.Before += ContactInfoInsertOnBefore;
            ContactInfo.TYPEINFO.Events.Update.Before += ContactInfoUpdateOnBefore;
        }

        private void ContactInfoInsertOnBefore(object sender, ObjectEventArgs objectEventArgs)
        {
            if (objectEventArgs.Object != null)
            {
                ContactInfo contactInfo = (ContactInfo)objectEventArgs.Object;
                if (contactInfo != null)
                {
                    UpdateContactDetails(contactInfo);
                }
            }
        }

        private void ContactInfoUpdateOnBefore(object sender, ObjectEventArgs objectEventArgs)
        {
            if (objectEventArgs.Object != null)
            {
                ContactInfo contactInfo = (ContactInfo)objectEventArgs.Object;
                if (contactInfo != null)
                {
                    UpdateContactDetails(contactInfo);
                }
            }
        }

        private void UpdateContactDetails(ContactInfo contactInfo)
        {
            if (contactInfo.ContactBusinessPhone.Length > 50)
            {
                contactInfo.ContactBusinessPhone = contactInfo.ContactBusinessPhone.Substring(0, 50);
            }

            if (contactInfo.ContactJobTitle.Length > 26)
            {
                contactInfo.ContactJobTitle = contactInfo.ContactJobTitle.Substring(0, 26);
            }
        }
    }
}