AOS Version Comment Update

The customer would like to update Version Comments to Share using Edit In Microsoft.  We have been provided a method to do this with standard metadata, however Version Comments are maintained in the Version store which does not appear to update  

Actions taken to Reproduce:

1. Renamed custom-aos-metadata-mapping-context.xml.sample to activate and restart ACS. (This should map common metadata fields for extraction)

2. Opened Share and uploaded Office Document with Version Comments entered.  Version Comments appear in the Version Comments property

3. Open Document in "Edit in Microsoft"

4. Edit the document and update Version Comment. 

5. Save Document. 

Expected Behavior:

Version Comments are updated in Share

Actual Behavior:

Version comments persist from the original upload.