Questions in Lync 2013 - HD Photo

Question

Hi,
We have Lync 2013 Enterprise environment for 4000 users.  We ran the script mentioned in the below article to display the HD photo on Lync 2013 client:
http://gallery.technet.microsoft.com/Add-Personal-URL-Photo-in-df0136ea/view/Discussions#content
Outcomes:
The script is working just fine for the users who doesn’t have any photos in AD.
For the users who has photo in AD, the script works just fine until they go to offline. Once they are back to available from offline, Lync client picks up the photo from AD. (Could be because of the Address book changes over night). It tends to run the
script by administrator every day  to keep the HD photo for the users.
Questions:
Is this by design?
If not, is there a way to only keep the photo which got updated through Script rather than getting updated over night after the user went to offline?
Please advise. MANY THANKS.

Answer 1

The entire line I mentioned, looks like this decoded (yes, that's my real pic)
<contactCard xmlns="http://schemas.microsoft.com/2006/09/sip/contactcard">
<title updated="2013-10-18T21:13:22Z">Principal Consultant</title>
<delimiter xmlns="http://schemas.microsoft.com/2006/09/sip/commontypes"></delimiter>
<delimiter xmlns="http://schemas.microsoft.com/2006/09/sip/commontypes"></delimiter>
<displayADPhoto>true</displayADPhoto>
<photo type="enterprise" updated="2014-07-15T20:15:28Z"><uri></uri><hash>5a13f9596e1c9a932982b75e75ba9322</hash></photo>
<photo type="default" updated="2014-09-30T15:44:12Z"><uri>http://m.c.lnkd.licdn.com/media/p/3/000/0a9/284/0f4c3bf.jpg</uri><hash>349073057l</hash></photo>
<photo type="default" updated="2014-09-30T15:44:12Z"><uri>http://m.c.lnkd.licdn.com/media/p/3/000/0a9/284/0f4c3bf.jpg</uri><hash>349073057l</hash></photo>
</contactCard>
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