FAILURE :Invalid Request ID error when merging cases

FAILURE :Invalid Request ID error when merging cases

We are getting the following error when a case has been merged into another case.
 
for example
 
case 1 - 28249
case 2 - 28250
 
if case 2 gets merged into case 1, and when we click on the link that was generated for case 2 we get the error
FAILURE :Invalid Request ID.  .
 
Should it not send you to the merged case?

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