Gord's method works if you want to see everyone who, say, lives in San Francisco, and you run that search frequently. If you're looking to save the contacts who lived in San Francisco on Monday as a separate list from those who lived there Tuesday, which may change because people move, etc. I would combine Gord's technique with a Favourites List.
Run the search, then select all the results (Edit > Select All), then save them as a Favourite List, maybe called San Francisco Monday (View > Favourite Lists > Add). Do the same thing the next day, except name the list San Francisco Tuesday. Any time you want everyone who lived in San Francisco on Monday, use View > Favourite Lists > San Francisco Monday > Retrieve. Etc.
- R.
