SCM and preservation of file/folder modification date/time

Does the RTC SCM function preserve the modification date/time of files
internally? For example, when I "share" a project, and the files are
initially brought into RTC, does it preserve the date/time? And if so,
would it be possible to preserve this when "loading" the files into a
local workspace? It looks like the current behavior is that files that
get loaded, either via the RTC client or via the RTC Build Toolkit get
the date/time the file is loaded into the local workspace.

This question has been raised by a couple of folks on a team in that
they would like to see the date/time reflect the last time a given file
was touched (or created).

Brian