Comment 4 for bug 1199097

Reproduced with Inkscape 0.48.4 and 0.48+devel r12419 on OS X 10.7.5 (tested with cairo 1.12.2 and 1.12.14): the masked image (result of the PDF import) is missing when exporting to PDF again.

Earlier reports about the same issue (there are probably more of them):
- Bug #1133095 “gradient mask fails to output into eps file”
- Bug #743053 "Exporting mask with gradient to EPS results in blank page"
- Bug #605151 “Missing masked bitmap patterns in EPS export”
- Bug #427540 “missing (masked) images from pdf export”

Proposing to link as duplicate to bug #427540 (workaround as mentioned in comment #7 works with this file too).