After installing Attaché 19, you may wish to migrate some of your Attaché Accounts companies (datasets) to Attaché 19. The Attaché Data Migration Utility is designed to help you migrate companies to the new system.
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(Note that these instructions also apply to using the Data Migration Utility included in Attaché BI versions 3.4 to 3.7.2. For example, if you are now using Attaché BI and wish to migrate a history company from your previous Attaché Accounts system.)