YES, I lkeep copies of everything, paper, or on memory "sticks" USB drives whatever ya call em, and there's always CD's to copy data to too.

I just missed ya in chat, saw you were asking about ged (gedcom) file. You make it from your genealogy program,, here's some info:

To create a GEDCOM file with Family Tree Maker
To create a GEDCOM file with Family Tree Maker. 1. From the File menu, select "Copy/Export Family File". 2. Click the "Save as type:" drop-down list and ...
www.computergeniesofnwiowa.com/FTM.htm

oops misread your query, was thinking from FTM to Legacy.

Search Support
Jump to Downloading GEDCOMs from elsewhere on Ancestry.com‎: How to download your personal member family tree. •, How to import GEDCOM files into ...
ancestry.custhelp.com/cgi-bin/ancestry.../sab_answer.php?p...

http://ancestry.custhelp.com/cgi-bin/ancestry.cfg/php/enduser/sab_answer.p...

it takes a minute to load, it's a cached browser page, scroll down a bit and it explains downloading your GEDCOM from ancestry.
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then to import it into your Legacy program, see this info:

Legacy Family Tree Genealogy Software: Help - GEDCOM files
Before importing a GEDCOM file it is strongly advised that you back up your family file before hand. It is also important to update your Legacy file because ...
www.legacyfamilytree.com/helpGEDCOM.asp