Preset::get_printer_type matches a preset's printer_model against every vendor's model names and returns the first hit, so two bundles declaring one name make the lookup order-dependent, and the Add Printer list shows the printer twice. The existing name check is per bundle, because base profiles share names across vendors by design; this one covers the global machine_model namespace and runs over the whole tree, like the setting_id and filament_id checks.
SoftFever
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