New fretboard diagrams do not save barres properly

Hello everybody,
I was modifying some fretboard diagrams in order to include some minor chords to my customized pallete but when I create a diagram with the inspector and include a barre (see picture 1), when I store the new diagram in the palette (Ctrl+Shift+add), the barre is missing (see picture 2). And if I try to include the stored fretboard again in the score, the barre is also missing (picture 3)

Thank you for your help

Marta