Hi @fernandosilva,
We're in the process of creating and publishing guidance on transitioning Power Virtual Agents chatbots to the new unified authoring canvas, but I can share the below to help you.
As of today, there is no planned automatic transition of existing chatbots to the new unified authoring canvas, and there is no obligation to migrate either. Chatbots created on the previous version of Power Virtual Agents will continue to work even after the unified authoring canvas becomes generally available. If that changes, announcements will be published with sufficient notice and guidance.
That being said, we strongly encourage you to evaluate the new unified authoring canvas for your use cases and transition your chatbots to it once it's generally available (May 2023 timeframe), because all new features will only come to this version, and it will be easier and faster for chatbot makers to customize their chatbots, as the Bot Framework Composer will no longer be needed (nor available).
You can start today in your development or test environments, by creating new unified authoring chatbots from existing chatbots by following these steps: Create a preview bot from the content of an existing bot (preview) - Power Virtual Agents | Microsoft Learn
If you had been using Bot Framework Composer (BFC) dialogs, please check this guidance to map previous BFC capabilities with modern alternatives:
Key concepts for Bot Framework Composer users (preview) - Power Virtual Agents | Microsoft Learn
During a cloning operation of an existing chatbot to the unified authoring canvas version, BFC dialogs will be created as empty topics, with the same inputs and outputs. So, to make your chatbot fully functional again, you will need to recreate the BFC dialog logic in the new unified authoring experience. This should be straightforward for things like suggested options, adaptive cards, and variable managements.
On the upgrade process itself, it involves cloning your existing chatbots into new ones that use the unified authoring canvas (or creating new ones from scratch). There are no plans - again, as of today - to support in-place upgrades, so it's important to note that transitioning to the unified authoring canvas will lead to the creation of new, distinct, chatbots, so you’ll need to update your client to point to the new chatbot.
On a side note, chatbots created on the previous and on the new version of PVA can co-exist with the same environment.
Let me know if that helps
Henry