Creating object using Connection to External Database

I have a "Vendor" object that is created/edited/deleted through a Connection to External Database. This has been working very well. I am now in need of this "Vendor" object to both be created manually, as well as the existing Connection to External Database. Is this possible?

My concern is that I do not want any manually created Vendor objects to update the external data source. I want both the manually created "Vendor" objects to exist in M-Files without impacting any of the "Vendor" objects created by the Connection to External Database. 

As well, I do not want the Connection to External Database to delete any of the existing "Vendor" objects that were created manually in M-Files, and are not present on the import.