diff --git a/html/changelogs/AutoChangeLog-pr-15420.yml b/html/changelogs/AutoChangeLog-pr-15420.yml
new file mode 100644
index 0000000000..e97082f7ca
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+++ b/html/changelogs/AutoChangeLog-pr-15420.yml
@@ -0,0 +1,4 @@
+author: "Putnam3145"
+delete-after: True
+changes: 
+  - bugfix: "Atmos group processing heuristic no longer does opposite of intent"