DataFlow Choose destination settings "Use automatic settings" disabled

Please check the documentation available for this:

https://learn.microsoft.com/en-us/fabric/data-factory/dataflow-gen2-data-destinations-and-managed-settings

answering some of the questions that I've seen on this thread:

• Automatic settings are only supported for Lakehouse and Azure SQL database
• Automatic settings can only be applied to new tables 
• Dynamic table schema options on publish can only be selected when using the "Replace" update method

As mentioned in some previous replies, there are some experiences that perhaps don't exist today in Dataflow Gen2. For any of those please feel free to post an idea in the Fabric ideas portal (aka.ms/FabricIdeas)

if you can't use the "automatic settings" when trying to create a new table to a Lakehouse or an Azure SQL DB, please feel free to open a support ticket and reply to this message with the case number. I'll elevate it and have the engineering team take a closer look as to what might be causing such bug.

Please do refer to the documentation available that covers the current supported scenarios and limitations.