Adding change date from original element to comment
description
At the moment the modification date of the migrated work items and version control elements is set to the migration time (which makes absolute sense).
I think it'd be usefull to preserve the original date after migration, e.g. in the version comment field, because people often use the date information.
the new comment format could be (inspired by the vss converter tool):
{original date} original comment (Migrated by TFS Migration Toolkit)