This. It is far too common for applications to default to saving their own .special format, despite opening another fully supported format. Save should always d

This. It is far too common for applications to default to saving their own .special format, despite opening another fully supported format. Save should always default to file type opened, and .special format when a new file was created. Save As is an easy and friendly enough vector for allowing saving that opened .whatever file as a .special when specifically wanted. It really is unfriendly increased mental load to open a .whatever and have to remember or figure out you must Export to retain your file type.