--- a/rust/mapgen/src/template/wavefront_collapse.rs	Sun Jan 26 20:51:38 2025 +0100
+++ b/rust/mapgen/src/template/wavefront_collapse.rs	Sun Jan 26 21:29:54 2025 +0100
@@ -100,6 +100,8 @@
                 .map(|TileDescriptionHelper(t)| t.clone())
                 .collect(),
             wrap: desc.wrap,
+            can_invert: desc.can_invert,
+            is_negative: desc.is_negative,
             edges: NonStrictComplexEdgesDescription {
                 top,
                 right,