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+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Avoid clobbering of variants in high priority cbc.yaml entries when they aren't present in lower priority cbc.yamls. (#5039)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>