I currently have a license for DT3 (my customer account says “DEVONthink Pro”). Now I’d like to upgrade to version 4. If I understand correctly, there are two editions: DT4 and DT4 Pro – and I would like to get the Pro version with AI features, better OCR, etc.
My question: how do I upgrade from DT3 to DT4 Pro? Do I purchase the $99 upgrade for 12 months, or do I need to buy the full Pro version for $199?
Also, the upgrader’s guide BLUEFROG linked includes this:
Can I downgrade to a lower edition before upgrading?
Yes, we can downgrade your license to a lower edition if you don’t need the functionality of the higher edition anymore and want to save upgrade costs and, later, costs for extending the updates of your license. As you paid good money for the additional feature set of the higher edition, we need your confirmation that you have understood that downgrading is not revocable and are sure that you want to do it. Please contact our sales support with the request.
Downgrading to a lower edition before upgrading your license is an exception – to the point that it requires contacting sales support directly for confirmation.