We have seen this issue at a few of our customers; so we came up with a way of mastering and linking matching records. Then, as Lars has suggested it then becomes possible to create a subgrid or view which links and shows your matching records together.
Once you know the links, you can then potentially create processes which route your cases more effectively, by attaching them to the Master, which will have all other child matching records linked to their Master.
As we have a proven Perfect & Merge solution and methodology to assist with your specific issue, feel free to make contact if you feel we can help?
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