Trying to use the DoulosSILCipher font to add music notation to liturgy material

Indonesia (and China and maybe other places) use numeric music notation. The font DoulosSILCipher was developed to allow that to be done in LibreOffice. The font also works in Paratext by copying and pasting from our LibreOffice hymnal:

But when I send the text through PTXprint, the PDF converter mangles the output even if set to use the DoulosSILCipher font:

But if I send the same text through the Export to RTF in LibreOffice, I get this:

And that exported to PDF gets me this:

So it looks like there is something happening in the PTXprint conversion.

Here is the archive:

SLU-PublikasiLiturgiSelaruPTXprintArchive.zip

Thanks for looking into this.

NB: you will notice the lyrics don't align with the notes. This is because Paratext sucks out all the multiple spaces. Any clues for converting those spaces into something that won't be deleted when we paste the songs in?

Reproduce the conversion using SLU-PublikasiLiturgiSelaruPTXprintArchive.zip and compare the PTXprint PDF with the LibreOffice-exported PDF. Start by tracing PTXprint's font handling for DoulosSILCipher and the generated XeTeX output. Done means the numeric music notation renders correctly; the lyric-spacing question is a separate follow-up.