Issue with generating an Excel with Translated Column names.

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I am using the "Generate an Excel File" action to generate and send out an Excel to a customer, using values from an Item List. Following that action, I'm using another "Generate an Excel file" action to then update the existing Excel and map it's column name cells (A1-Z1) to Business Rules containing translations for those column names, so we don't have to use our internal Item List names. That now leads to the generated - translated Excel to become corrupted, as supposedly, its internal XML data structure gets messed up.

Is there any way to fix this, while still giving us the flexibility of translating the headers? Thanks.