In Address Book, why does Apple let you create custom fields in the Template cards but not have them available for importing?

Question

I open Address Book, go into Preferences, select Template and under the Names field (friend, assistant, father, etc) I add a custom field called "Principal".
I also add two more custom fields in the Email area.
Quit Address Book then relaunch. Add a new contact and the new custom fields, Principal, etc. are there. All good so far.
I have a Now Contact file with about 200 contacts in it. I export all fields as a Text file, Tab delimited. No problems there. With Address Book launched, select Import, pick the text file, leave Text Encoding on Automatic and click Open.
The window that shows the fields for Address Book and fields for the text file side by side opens. This is where you match up the correct fields for importing. If I go to one of the fields from the text file that I created a custom field for, click under the Address Book heading on the Do not import, scroll thru the Apple choices of fields, none of the custom fields show up. Only the original Apple ones are there. Why does Apple let you create them in the Template area but not have them available for importing? Does anyone have suggestions on getting around this?

Answer 1

While most likely not of interest to you, Spotlight can also tell you where the files it finds are located
Hover the mouse pointer over the name, and press Command-Option and the path to the file will be displayed.
As for opening a terminal session in the directory where a file is located, there is Applescripts that do just that as well as specific features in Lion/Mountain Lion terminal:
<http://stackoverflow.com/questions/420456/open-terminal-here-in-mac-os-finder>
<http://hints.macworld.com/article.php?story=20110729034827358>
<http://www.macworld.com/article/1047793/folderinterm.html>
<http://www.macworld.com/article/1161876/open_finder_folder_in_terminal.html>
<http://www.macobserver.com/tmo/article/os_x_lion_open_a_folders_location_in_term inal>