in parts reproduced with Inkscape 0.47+devel 8860 on OS X 10.5.8
Undoing path modifications of extension in 'Extensions > Modify Path' (Add Nodes, Envelope, Fractalize, Jitter Nodes...) undoes the import of above attached PDF file '410846-test-LeWitt.pdf' as well.
Not reproduced with other - randomly chosen - PDFs.
Not reproduced with imported bitmaps.
in parts reproduced with Inkscape 0.47+devel 8860 on OS X 10.5.8
Undoing path modifications of extension in 'Extensions > Modify Path' (Add Nodes, Envelope, Fractalize, Jitter Nodes...) undoes the import of above attached PDF file '410846- test-LeWitt. pdf' as well.
Not reproduced with other - randomly chosen - PDFs.
Not reproduced with imported bitmaps.