Export to IDML (It might be under FIle>Export or File>Save As) and choose InDesign Markup Lanaguge (IDML)
Open that in you InDesign - it opens as Untitled.
Save it with your preferred file name.
Export to IDML (It might be under FIle>Export or File>Save As) and choose InDesign Markup Lanaguge (IDML)
Open that in you InDesign - it opens as Untitled.
Save it with your preferred file name.