In a 6/8 measure I enter dotted quarter notes and Finale (V2014.5, Win 10) converted them to quarter notes tied to eighth notes. On some files in the past, where I used "Einfache Eingabe" I just realized it, when I reopened the file. Yesterday I found out, that there is a difference if I copy and paste or insert the notes.
Why is this difference? How can I generally prevent this effect? How can I make it undone?