Earliest - 1/1/1990 or the oldest available date, which ever is more recent
Notes
To start an import with a date earlier than 1/1/1990, use the desired date rather than Earliest. (The actual earliest data date can't be known until the import is completed.)
The default interpretation of Earliest can be changed if desired by editing RealTest.ini (when RT is not running) and changing EarliestImportYear.
