changelog

Author: dashpole

CHANGELOG.md

@@ -17,6 +17,8 @@ release.
   ([#3648](https://github.com/open-telemetry/opentelemetry-specification/pull/3648))
 - MetricReader.Collect ignores Resource from MetricProducer.Produce.
   ([#3636](https://github.com/open-telemetry/opentelemetry-specification/pull/3636))
+- Attribute sets not observed during async callbacks are not exported.
+  ([#3242](https://github.com/open-telemetry/opentelemetry-specification/pull/3242))
 
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