diff --git a/bzcarbon2/migrations/bzcarbon.0.4.7.json b/bzcarbon2/migrations/bzcarbon.0.4.7.json
deleted file mode 100644
index 1d6aeab..0000000
--- a/bzcarbon2/migrations/bzcarbon.0.4.7.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "recipe": [
-    ["imersium-gear-wheel-nanotubes", "kr-s-c-imersium-gear-wheel-nanotubes"],
-    ["imersium-beam-nanotubes", "kr-s-c-imersium-beam-nanotubes"],
-    ["aeroframe-scaffold-nanotubes", "se-aeroframe-scaffold-nanotubes"],
-    ["nanomaterial-nanotubes", "se-nanomaterial-nanotubes"]
-  ]
-}