Numeric cells are exported with custom format in Excel, for example :
Hello, Emmanuel!
Thank you for writing to us.
Kindly note that formatted cells having a custom format after exporting to Excel are an intentional design choice. We aim to ensure that the exact format defined in Flexmonster is passed to Excel. In this regard, the custom format provides consistency between the Flexmonster report and the exported Excel file.
Please let us know if you have any further questions.
Best Regards,
Maksym