That the origin tag is automatically removed sucks. It consumes a lot of time to re-add it again and again.
\begin_document
\begin_header
\save_transient_properties true
-\origin unavailable
+\origin /systemlyxdir/examples/de/
\textclass tufte-handout
\use_default_options false
\maintain_unincluded_children false
\begin_document
\begin_header
\save_transient_properties true
-\origin unavailable
+\origin /systemlyxdir/examples/es/
\textclass tufte-handout
\use_default_options true
\maintain_unincluded_children false
\begin_document
\begin_header
\save_transient_properties true
-\origin unavailable
+\origin /systemlyxdir/examples/
\textclass tufte-handout
\use_default_options true
\maintain_unincluded_children false