Yammer Activity changes Message - yammer

Question

Is it possible to use a URL in both a message and an activity in Yammer ?
Using the messages API, it is possible to construct a message which is:
Properly linked (in this example clicking on Title goes to example.com/id/1/); and
Includes an image (placehold.it/100x100).
For example:
#!/bin/bash
GROUP={GROUP}
TOKEN={TOKEN}
curl -X POST \
-H "Authorization: Bearer $TOKEN" \
--data "body=hello" \
--data "group_id=$GROUP" \
--data "og_fetch=false" \
--data "og_url=http%3A%2F%2Fwww.example.com%2Fid%2F2%2F" \
--data "og_title=Title" \
--data "og_image=http%3A%2F%2Fplacehold.it%2F100x100" \
--data "og_description=Description" \
--data "og_object_type=page" \
--data "og_private=true" \
https://www.yammer.com/api/v1/messages.json
Using the activity API it is possible to make an Open Graph object:
Example:
#!/bin/bash
TOKEN={TOKEN}
EMAIL={EMAIL}
curl -X POST \
-H "Content-type: application/json" \
-H "Accept: application/json" \
-H "Authorization: Bearer $TOKEN" \
-d '{"activity":{"actor":{"email":"'$EMAIL'"},"action":"create","object":{"url":"http://www.example.com/id/1/","image":"http://placehold.it/110x110","title":"Title","type":"page"}},"private":"false","message":"This is an update"}' \
https://www.yammer.com/api/v1/activity.json
The problem is that now the original message from Step 1:
No longer links to the actual content (it links to https://www.yammer.com/{network}/graph/{id})
Loses its image (it is now mug0.assets-yammer.com/mugshot/images/75x75/3rd_party.png)
As an aside, the open graph object doesn't update for the new image provided in the activity post (110x110 vs 100x100). The docs (https://developer.yammer.com/v1.0/docs/open-graph) say "when an OG object exists (with the same URL), it is updated appropriately."

Answer 1

In one example you have the open graph object set to private and the other is to public. That may be causing the weird issue you are seeing.
"og_private=true"