diff --git a/internal/core/adt/eval.go b/internal/core/adt/eval.go
index 20420475709..bb8dc55dd5d 100644
--- a/internal/core/adt/eval.go
+++ b/internal/core/adt/eval.go
@@ -1391,7 +1391,7 @@ func (n *nodeContext) addVertexConjuncts(env *Environment, closeInfo CloseInfo,
 		// is necessary to prevent lookups in unevaluated structs.
 		// TODO(cycles): this can probably most easily be fixed with a
 		// having a more recursive implementation.
-		n.ctx.Unify(arc, AllArcs)
+		n.ctx.Unify(arc, Partial)
 	}
 
 	for _, c := range arc.Conjuncts {
diff --git a/internal/core/export/testdata/adt.txtar b/internal/core/export/testdata/adt.txtar
index 218f2ba500c..a53bddd1f56 100644
--- a/internal/core/export/testdata/adt.txtar
+++ b/internal/core/export/testdata/adt.txtar
@@ -8,7 +8,6 @@ p1: [X=string]: name: X
 d1: "foo\(bar)": int
 bar: "bar"
 
-// XXX: reference not resolving.
 d2: C="foo\(bar)": {
     name: "xx"
     foo: C.name
@@ -227,8 +226,6 @@ errorListDef: {
 [d1 foobar]
 [bar]
 [d2]
-- XXX: reference not resolving.
-
 [d2 foobar]
 [d2 foobar name]
 [d2 foobar foo]
@@ -309,8 +306,6 @@ _|_ // e3: index out of range [2] with length 2
 		foobar: int
 	}
 	bar: "bar"
-
-	// XXX: reference not resolving.
 	d2: {
 		foobar: {
 			name: "xx"