Request to consider redefining publicationDate field as integer type

In acquisitions PO lines, the JSON field publicationDate is defined as a string type although the data appear to be numbers. For reporting, this requires casting to an integer type and potentially other difficulties. (We have seen Unicode characters such as "２" within similar numeric string fields in deployed FOLIO instances; although I do not know if the data were imported via the proper APIs.) If possible, please consider whether an integer type might be more suitable for this field.