Hello Christine,
If the records are moved to the external table as a batch, then I'd STRONGLY suggest using Adagio GridView to create an Excel table of the data you need. This pocess is way easier to debug, and Adagio GridView can be scheduled to create the table whenever you want.
The licensing "issues" (such as they are) are the same for both products. However, your user community will find GridView a useful tool in its own right, while ODBC is very strictly a programmer's tool.
Bruce Gardner, who monitors this forum, has experience with both products. Steve Schwartz has several sites running complex GridView processes overnight. Same for Doug Dickie and Brian Stief.
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Andrew Bates