Save As overrules the file name’s extension. xxxxx.odt becomes xxxxx.odt.docx unless you specifically state in the pull down that it is an odt. Save As should not allow this change or at least promt for permission to do so.
Hello,
This is expected Editor’s behavior. You can choose Save as type instead of adding extension to the file’s title. This way your file will be saved in the desired extension.
Since it is not the behaviour in any other word processor I have used, it will take a while for me to adjust and I will probably goof up a bunch of documents before the habit gets changed. This is the reason behind the request.