[O] links to attachments don't export anymore

[Myles English]

Hi,

This used to work, back in August but I just updated today and Something
Has Changed.

After setting this option:

(setq org-link-abbrev-alist '(("att" . org-attach-expand-link)))

It was possible to insert a link to an attachment like this:

[[att:FigureA.jpg]]

and clicking on it would show the file (still works), and it would show
up in the exported document (no longer happens).

Inspecting the output shows that the link is wrong:

/home/myles/myorg/FigureA.jpg

When it should be:

/home/myles/myorg/data/ad/c7f168-33bb-4e38-83fa-6aea6708563b/FigureA.jpg

Can anyone tell me how to get the link exported correctly?  (And why has
the indenting of this email gone weird?)

Thanks,

Myles