Do applications preserve xattrs when saving? Do applications on Mac OS X (specifically the MS Office applications, but interested in others as well) generally preserve xattrs (Extended Attributes) on documents when saving them?

For example, if I add an xattr to a file:

xattr -w test "test attribute" mydocument.docx


Then open this in MS Word, make a change, and save, is the attribute maintained? What does

xattr -l mydocument.docx


print after saving?
Found a Mac running OS X 10.9.5. When saving through a terminal editor (vim) and GUI programs (TextEdit, MS Word), xattrs are preserved.