diff --git a/show/dance2013/curves/song17-backchase_env b/show/dance2013/curves/song17-backchase_env
--- a/show/dance2013/curves/song17-backchase_env
+++ b/show/dance2013/curves/song17-backchase_env
@@ -1,4 +1,4 @@
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 163.976541264 1
 177.067082349 1.0