I found this utility great for editing and copying the AutoComplete data.
Take a look I’ve added the link to the site at the bottom
Copyright (c) 2010 – 2012 Nir Sofer
Every time that you type an email address or name in the message window of MS-Outlook, it automatically offer you a list of users and email address that you can choose. This feature is known as ‘AutoComplete’ and Outlook automatically build this emails list according to user activity and save it into a file with .NK2 extension.
In some circumstances, you may need to repair or modify the values appeared in the AutoComplete list, or you may want to remove unwanted email addresses and/or to add new email addresses. MS-Outlook doesn’t provide any ability to edit this AutoComplete list, so this is where NK2Edit software can help you.
Easily modify or fix all information stored in the NK2 file, including the display name, the email address, the exchange string, the Drop-Down display name, and the search string.
Easily remove unwanted single quote characters from the display name and from the Drop-Down list.
Delete unwanted emails, as well as add new emails, by typing them manually, or by choosing them from the address book of Outlook.
Copy NK2 records from one NK2 file to another – simply by copy and paste !
Build a completely new NK2 file and add the desired emails into it, by typing them manually, by adding them from your address book, or by copying records from another NK2 file.
Extract data from corrupted NK2 files that Outlook cannot read anymore (When Outlook AutoComplete stopped working) and even repair them so Outlook will be able to read them again.
Export all data stored in the NK2 file into a special Unicode text file in a stucture similar to .ini file of Windows. You can open it any text editor you like, make the changes you need, and then convert it back into NK2 file that Outlook can use.
Export the emails information stored inside NK2 file into HTML/Text/csv/xml file.
Export the emails information stored inside NK2 file directly into the contacts of Outlook.
Copy the selected NK2 records in tab-delimited format and then paste the information into Excel.
Change the order of the records in the NK2 file, which also affects the order they appear in the drop-down. You can also sort the list in alphabetical order of the Drop-Down display names. (However, be aware that Outlook change the order again when the user send emails)
Command-Line Support: Write simple scripts that can add, remove, or modify records inside the NK2 file, without displaying any user interface.
NK2Edit is a portable application that can be used from any computer with Windows operating system (Starting from Windows 2000) without need of any installation process, and without making changes in the Registry.
NK2 Control Center – Allows you to watch to location and the status of all NK2 files in your organization.
NK2Edit works on any version of Windows, starting from Windows 2000 and up to Windows 7/2008. NK2Edit is a Unicode based application, and thus it cannot work under Windows 95/98/ME.
NK2Edit can read, write, and create NK2 files for Outlook 2003, Outlook 2007, and Outlook 2010.
Outlook installation is not required on the computer that you run NK2Edit, except of “Add Records From Address Book” feature, which cannot work without Outlook. NK2Edit can also be used to open, edit, and save NK2 files on remote computers in your network, as long as you have read/write permission to the remote NK2 file.
The license for using NK2Edit is different from most of other NirSoft utilities:
NK2Edit is completely free for personal use at your home and for using in any charity/non-profit organization.
If you need to use NK2Edit in a company/business organization, you can freely try and evaluate the NK2Edit software for 14 days and verify that the software really works as you expect.
If after the 14-days of evaluation you decide to continue using it, you have to purchase a commercial license according to the number of workstations with Outlook that NK2Edit is needed for opening or editing their NK2 file.
The software is provided “AS IS” without any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The author will not be liable for any special, incidental, consequential or indirect damages due to loss of data or any other reason.
NK2Edit vs NK2View
NK2View was originally released as a small free tool for viewing the content of NK2 files. After many requests from users, I added some limited editing features that allowed the users to remove and add records into the NK2 file. However, NK2View was not designed to be a real NK2 editor, and for some NK2 files, it failed to add/remove records properly.
As opposed to NK2View, NK2Edit was designed as a real NK2 editor that can make any change you need and then save it back into a valid NK2 file.
Using NK2Edit Without Installation
NK2Edit can be used without any installation process. Simply download the zip file of NK2Edit, extract the files into any folder you like, and run the executable file (NK2Edit.exe) . You can also put the files of NK2Edit in a shared network drive, and run it from any workstation in your company.
Whenever you want to remove NK2Edit from your system, simply delete the files of NK2Edit (NK2Edit.exe, NK2Edit.cfg, and NK2Edit.chm). NK2Edit doesn’t write anything to the Registry or other places, so deleting the files is enough for removing NK2Edit completely from your system.
Using NK2Edit With Install/Uninstall Support
If you want, you can also download NK2Edit with installer (NK2Edit_setup.exe), and install NK2Edit like any other software. The installer of NK2Edit automatically add a new group to the start menu of Windows and it also add a new entry to the uninstall list of Windows, so you’ll be able to easily uninstall NK2Edit if it’s needed.
x64 Version of NK2Edit
NK2Edit has 2 features that extract address book/mailbox information directly from Microsoft Outlook: “Add New Records From Address Book” and “Add Records From Mailbox Recipients”.
If you use the 64-bit version of Microsoft Outlook 2010, you must download and use the x64 of NK2Edit in order to use the above 2 features. In all other cases, you should use the 32-bit version of NK2Edit. Be aware that if you have 64-bit Windows installation, but the installation of MS-Outlook is 32-bit, you must use the 32-bit version of NK2Edit in order to use the above 2 features.
Before You Start
When you edit your NK2 file, remember to verify that the executable of Outlook (Outlook.exe) is not running. If you edit the NK2 file when Outlook is opened, Outlook may save the NK2 file and overwrite your changes.
Backups of NK2 file: When you make changes in your NK2 files, it’s always important to keep a backup of the original NK2 file, so if something goes wrong and the modified NK2 doesn’t work properly, you’ll be able to restore the original one.
When you save your NK2 changes in the first time, NK2Edit automatically creates a backup of the original NK2 file with NK2Edit.First.bak extension. To restore the original NK2 file, simply use the ‘Restore Backup From First Save’ option. You can disable the automatic backup by unchecking the ‘Automatically Backup On First Save’ in the Options, although it’s recommended to keep this options enabled.
In addition to the automatic backup of the first save, NK2Edit also allows you to create a backup when you think it’s important. Simply use the ‘Backup Current NK2 File’ option, and NK2Edit will create a backup file with .NK2Edit.bak extension.
Know the limitation for number of records in NK2 files: Outlook 2003 limits the maximum number of records in NK2 files to 1000, while Outlook 2007/2010 limits the maximum number of records to 2000. When you edit your NK2 files, you should keep the number of records below these limits. See Also: Size limit of Outlook AutoComplete (.NK2) file.
In Outlook 2010, the AutoComplete file is saved with .dat extension and its header data is a little different from the previous versions of Outlook. In order to save the AutoComplete file for Outlook 2010 properly, you have to save the file with .dat extension, so NK2Edit will save it with the new file header of Outlook 2010.
Download NK2Edit here http://www.nirsoft.net/utils/outlook_nk2_edit.html