diff --git a/plugins/ue-design-skills/README.md b/plugins/ue-design-skills/README.md
index 79befae..9e20b10 100644
--- a/plugins/ue-design-skills/README.md
+++ b/plugins/ue-design-skills/README.md
@@ -71,6 +71,26 @@ command.
 If a recipe returns nothing in your tree, widen it before concluding the problem
 is absent. **An empty search result proves the pattern, not the absence.**
 
+### They have also been run against the next engine version
+
+Every runnable recipe -- 229 of them -- was executed against a second tree one
+major version newer, and the two outputs compared line for line. Nothing was
+one-sided: no recipe answered in one version and fell silent in the other. 176
+matched exactly, 14 differed in size rather than in kind, and 39 returned nothing
+in either tree.
+
+Two cautions come with that, and they matter more than the numbers.
+
+**Matching counts mean the search surface did not move, not that the claim still
+holds.** Anything that depends on meaning -- who owns a fact, what replicates,
+what is validated -- is not tested by counting lines.
+
+**The comparison is worthless until the trees are made comparable.** In the first
+pass 55 recipes appeared to differ; 41 of those differences were generated build
+output present in one tree and a tooling plugin present in the other. One query
+reported 122 files before the exclusions and 1 after. If you compare two versions
+of anything this way, exclude build artefacts first and say that you did.
+
 ## What this bundle does not claim
 
 - It is not a defect list for any current engine version. It is a worked example