dgottlieb@keylime:~/10gen/mms/server$ mongo
MongoDB shell version: 2.1.0
connecting to: test
> db.export.insert({t: Timestamp(0, 8)})
> db.export.find()
{ "_id" : ObjectId("4f7f93e94057ae51e71576eb"), "t" : Timestamp(0, 8) }
> 
bye
dgottlieb@keylime:~/10gen/mms/server$ mongoexport -d test -c export | mongoimport -d test -c import
connected to: 127.0.0.1
connected to: 127.0.0.1
exported 1 records
Fri Apr  6 21:10:17 imported 1 objects
dgottlieb@keylime:~/10gen/mms/server$ mongo
MongoDB shell version: 2.1.0
connecting to: test
> db.import.find()
{ "_id" : ObjectId("4f7f93e94057ae51e71576eb"), "t" : { "t" : 0, "i" : 8 } }
> db.export.find()
{ "_id" : ObjectId("4f7f93e94057ae51e71576eb"), "t" : Timestamp(0, 8) }