@MoiraGoggin in GL under utilities is where you delete accounts. With 700 to delete, you may want to create a VI job to populate the table. You will need to use the 'GL_ChangeAccounts' Table.
However, I will warn you that we have had problems in the past with the 'Change Accounts' utility when working with large groups of accounts that we imported via VI. As with any mass update process, make sure you work with a backup copy, double check your results in summary and in detail, and then get the client to review and approve before finalizing the process.
Happy hunting!