How to get last modified date of part in the exported file from windchill 11?

Hello Guys,

In PTC windchill i got, two different dates are being shown as 'Created On' and 'Last Modified' as shown in below Screen shot attached.

When i export the part, i found only one date called 'Created On' in my exported file. but i want both the dates within same file.

How do i get it? Please help me to get it.