Finding mating cable assembly for smt header

I’m looking to add a 12p header as well as a 12p cable assembly to a customer’s board. We had used the 609-3701-1-ND header on the board and, after the fact, ordered several 3M15514-3M155950-X-6-ND cable assemblies. They did not fit without modifying the connector on the assembly (cutting tabs/ears). At this point, we are spinning the board so, are looking to change one or both of the parts so that they mate. The assembly doesn’t list mating connectors on the website and the header shows two mating connectors, but not mating assemblies. Please assist. Scott at Dutchman Electronics LLC

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