The workbook you are pasting to uses a different date system.The source workbook uses a different date system than the target ...

The workbook you are pasting to uses a different date system.The source workbook uses a different date system than the target workbook. Copying and pasting between these workbooks will cause their dates to differ by approximately four years. Excel can convert the dates so that their values match the date system in the target workbook.chid://4018Learn about date systems