Ne znam za problem sa datumom, kod mene u Excel 2010 prikazuje regularno, datum i vreme.
Morao sam da udesim obe putanje gde su definisane i onda je proradilo.
Otvoriš karticu
Connection Properties >
Definition
tamo u dve kutije imaš navedenu putanju do fajla koji se učitava.

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