Too much confusion here.
1. The integer value requested is not the numeric value of a date value but a value from the formatted date. Thus values will fall between 10100 and 123199 and the data type of the new field must be Long.
2. The conversion is taking place in Access. Thus an update query will use Access SQL.
3. Data export will happen later.
So all that is needed is a simple update query in Access:
UPDATE
tblYourTable
SET
YourLongField = Val(Format([YourDateField], mmddyy));
/gustav