Hi Susan,

Here's the reason V 8.1D is slower than V8.1C:
Quote:

a. New Feature: The over credit limit check calculation now includes invoices and credit notes for which Day End has not yet been run. Includes payments and taxes.

With large numbers of completed invoices in your current file, they must each be read and perhaps added to the outstanding customer balance to determine if the customer is over their credit limit. Keeping the number of documents in the "Current" file to a minimum will speed up this process.

This feature was added as a result of many customer requests and to make the management of credit limits more accurate.
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Andrew Bates