Five years ago I used Thunderbird to create class re-union address books. The procedure was first: create Excel spreadsheet with the following columns First Name, Last Name, first Email, Secondary Email. Second: have Excel create a CSV file. Third: have Thunderbird read the CSV file and create an address book. Fourth: export the created address book to a LDIF file. This procedure worked very well and the LDIF's were used between senders with no difficultly. Now, move forward to today. The import function doesn't have any means to define the columns of an input file and creates a blank address book, and the export function creates a ZIP file of everything. Now, 1: is there anyway to define an input file? 2: how can I export a LDIF file?