Convert xls to xlsx - does not delete old file
 

When I convert an xls to xlsx file on my local drive excel delete's the xls
file. However, if I convert an xls to xlsx on a network share excel does
not delete the old file. Thus I have duplicate files - just different file
extensions. This leads to some users updating the older version of the file.


Any one else having this problem? Does anyone know a solution for this issue?

Thanks,
David