Unable to view any archived tickets older than August 2015

Unable to view any archived tickets older than August 2015

Since upgrading to  9.1 Build  9120 we have noticed that when we search or type in a reference number of an archived ticket that was logged or closed prior to August 2015, we are unable to see any detail of the ticket bar the below;
 

 

Please advise what could be causing this?



Thanks Lynne

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