Decomission of XML V1
The XML 2 file type is now the default and only file type for XML documents.
The legacy XML1 file types are still available as hidden files type behind the scenes so that projects using that file type can be completed without issues. For new projects, only the latest XML 2 file type can be used.
If you have XML1 file type settings that you want to transfer to the XML 2 file type, see Migrating XML V1 file type settings to XML V2 .