As a producer, I want to be able to execute WOH partial-import on archived sources

If a capture agent ingests data using /ingest/addPartialTrack, a SMIL file describing the partial tracks and their placement is created and attached to the media package.
If a workflow archives both the uploaded sources and that SMIL file, those sources cannot be re-processed by WOH partial-import, however.

The reason is that the SMIL file contains references to files in the working file repository. Those references will not be correct anymore once the files have been move from the working file repository to the archive storage.