Yes. The Final Draft upgrade is available to registered customers who own any earlier version of Final Draft.
Customer Numbers only became part of the Final Draft package in the middle of FD4, so if you have FD4 or earlier, you may not have a Customer Number. If this is the case, you will not be able to order the upgrade from the online store. Instead, please reach out to us here and a sales representative will help assist you.
Click HERE to see FD13 system requirements.
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https://fd.support/3WWiZxB