Anki not importing link text

[nanjigen]

I am experimenting with having pdf-tools links in anki that are clickable and allow you to open to a position in pdf-tools.

The link format for these links is an orgmode type link:
pdftools:~/Documents/PDF/roberts2013.pdf::4++0.583333;;annot-4-3

However either anki-editor or Anki remove a portion of the link, namely "pdftools", producing ~/Documents/PDF/roberts2013.pdf::4++0.583333;;annot-4-3 instead.

What could be causing this?