--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/TEST0000_mzrt_match_unmatched_first.tsv	Thu Jun 10 15:41:17 2021 +0000
@@ -0,0 +1,356 @@
+rowID1	MZ1	RT1	rowID2	MZ2	RT2
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