Hi @SalesTeamSix Existing workflows will be upgraded to render in the new UI, without disruption. We elaborate on the process a bit more in this blog post: https://www.hubspot.com/product-updates/a-new-engine-for-your-workflows
Note that while we’re still collecting requests for customers who specifically want to upgrade immediately, we’ve also started the general roll to all customers. Customers who take no action, will see their contact workflows upgraded to the new tools soon. Please let me know if any questions remain!