Difference in Rev id: Disk vs (Disk+Memory) Output for CBTransfer in CSV mode

1. Add a default bucket to a cluster with 1 node
2. Add item to the cluster and wait till the disk queue is 0

Expectation:

The following should dump the same output

From (memory+disk)

/opt/couchbase/bin/cbtransfer http://10.6.2.144:8091 csv:/tmp/default.15f6a721-c688-11e3-8c97-6003089eed5e.csv -b default -u Administrator -p password --single-node

From (disk)

/opt/couchbase/bin/cbtransfer couchstore-files:///opt/couchbase/var/lib/couchbase/data csv:/tmp/default.16d409e6-c688-11e3-94cc-6003089eed5e.csv -b default -u Administrator -p password

See how the rev ids are different

[root@palm-10307 ~]# cat /tmp/default.15f6a721-c688-11e3-8c97-6003089eed5e.csv
id,flags,expiration,cas,value,rev,vbid
dd,0,0,3271998131903809,"

{""click"":""to edit"",""new in 2.0"":""there are no reserved field names""}

",49,663
[root@palm-10307 ~]# cat /tmp/default.16d409e6-c688-11e3-94cc-6003089eed5e.csv
id,flags,expiration,cas,value,rev,vbid
dd,0,0,3271998131903809,"

{""click"":""to edit"",""new in 2.0"":""there are no reserved field names""}

",1,663
[root@palm-10307 ~]#

Strangely for any number of items the rev id difference is 49 and 1 only.