Are you referring to the block of text that reads:
Note Openpyxl does not manage dependencies, such as formulae, tables, charts, etc., when rows or columns are inserted or deleted. This is considered to be out of scope for a library that focuses on managing the file format. As a result, client code must implement the functionality required in any particular use case.
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If so, it's a good thing I went ahead and did implement my own functionality for that. :-)