Comment 17 for bug 427540

The problem still exists in Inkscape 0.92.2 (5c3e80d, 2017-08-06) on GNU/Linux x86_64 (Debian).

It can be reproduced like so:

# Download a PDF that contains a masked image
curl http://www.cypress.com/file/44791/download -o AN63620.pdf
# Extract the relevant page
pdftk AN63620.pdf cat 3 output pg_0003.pdf
# Use Inkscape to convert the PDF to SVG
inkscape --without-gui "pg_0003.pdf" --export-area-page --export-plain-svg="pg_0003.svg"
# Use Inkscape to convert the SVG back to PDF
inkscape --without-gui "pg_0003.svg" --export-area-page --export-pdf="pg_0003_exported.pdf"
# Observe, that figure 3 is missing on the exported PDF