I managed to delete the duplicate Aircraft connection and all of the references in the form and the form is working properly on my local computer. The dropdown is still not working after converting the data connections and publishing the form to SharePoint. The only thing I see different in this data connection is the view is bringing in a primary key
Doc_No*
One of the other data sources for the Engines is referencing AC_Doc_No*. I can’t check the engine data connection until the Aircraft connection is working. I thought maybe something else needs to be done for the SharePoint connection since the connection has a primary key. Any ideas on why the dropdown is empty on SharePoint but works locally?