I know way back in the day DG did this, it wasn’t so much reassigning as it was members of the new chapter choosing that letter. A long time ago the founding members of a chapter choose their letters, which is why some of our oldest chapters are not in alphabetical order, such as Eta - Akron and Beta - Washington. Theta - Indiana is actually the third iteration of the Theta chapter, the first two being closed due to women leaving campus. I believe there was at least one other instance of this in our history before moving to alphabetical order.
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