I have a product that you can purchase using a credit, let's call it "Credit ABC."
When you duplicate this product, it also duplicates the Credit Type, so there are now two different credit types both called "Credit ABC."
If I rename one of them to "Credit DEF" then I can see that the the first product and the second product are attached to different credit types. But on the Credit Types list it's REALLY hard to figure out which was the original and which was the duplicate.
To fix the issue, I can rename one, then modify the Credit type that the duplicated product consumes, then delete the duplicated Credit Type, then rename the remaining one, and everything is okay. But it's super annoying!
I submitted a bug report and was told that I had to post it as a feature request instead.