I downloaded a presentation and edited it in LibreOffice Impress. Apparently I didn't pay attention it was only saved in /tmp - and it's gone now, but I exported it as PDF, which I still have.
Now I need to do some remarks on the presentation. Is there a way to open it again in Impress? I'm doing small changes now in LibreOffice Draw - which doesn't let me export to odp or ppt.
You can import it to Impress by setting the file type and filter manually when opening (File → Open...), usually through a drop down, to PDF - Portable Document Format (Impress).
You can also use the command line option --infilter=impress_pdf_import.
Otherwise it will default to Draw and will open in a new Draw window as you experienced. This also happened to me and can be confusing.
