While your statement may be literally true, I believe it is highly misleading. The formalization of "the final solution" took place on 20 January 1942 at the Wannsee Conference, a month and a half after the United States entry into the war. While many Jews had been executed before that date, there was no systematic effort to eradicate the Jewish people until after that conference, and thus no need for train schedules to ship Jews to extermination camps which did not exist prior to that point in time.
I don't believe that IBM sold or would have been permitted to sell anything to Nazi Germany after they had declared war on the US.
It is certainly possible that IBM may have sold Germany such a system before we were at war with them, but that is far different from what you intimated with your comment.
IBM sold the system to Germany before the war, and it greatly facilitated the Holocaust because it made the big roundups a lot simpler. The prewar Jewish population in Germany was a fraction that of Poland’s, and the occupation of Poland was a necessity from the standpoint of carrying out the mass murders. Himmler said, “Polish Jewry is the genetic powerhouse of European Jewry.”