Convert PDF files.

If version 2.3.2 is used again and we want to IMPORT and convert a PDF score from this version, it does, but it can not be edited with version 2.3.2; error or file defective.
In version 3.0 I miss the function of the Name Notes plugins; notes that appear below the chosen staff and that you can modify its size, font and horizontal or vertical position. In the new version the name of the notes appear inside the heads of the notes; It's ugly and you do not see it in the scores. Will there be a solution for this function so desired by musicians in learning? Thank you.