A new update is available for SAS/ACCESS Interface to PC Files , version 9.4_M3 :
The ddmmyy10. format writes different values to different sheets when you are using the XLSX driver to export to EXCEL
Note: A comprehensive list of all SAS hot fixes is available from support.sas.com. You can use the SAS Hot Fix Analysis, Download, and Deployment (SASHFADD) tool to manage your SAS hot fixes.