How to remove a defunct printer from IPP integration?

Configuration
1

The IPP integration had found a couple of shared printers from my computer, but since then, I’ve disabled these. However, it keeps complaining about the missing printers. On the Configuration > Integrations page, I can only see the error message, delete or disable the whole integration. The missing printers can’t be found in the Devices or Entities tabs. How can I remove these and keep only the new printer?

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This seems similar to this unanswered post

2

Ok, this is actually embarrassing, but the “Delete” there (which confirms as “delete this integration”) actually is just about deleting that device/entity/whatever from that Integration…

I guess this could be renamed, let’s try reporting an issue in the core.