Difference between Recovery Checkpoint and Current Checkpoint

Hi,

When I use INFO <Extract Name> SHOWCH, the Recovery Checkpoint and Current Checkpoint values are the same:

GGSCI (DevServ64-1) 6> info e000001a showch

EXTRACT    E000001A  Last Started 2013-07-23 16:14   Status STOPPED

Checkpoint Lag       00:00:00 (updated 00:14:41 ago)

Log Read Checkpoint  Oracle Redo Logs

                     2013-07-24 13:35:11  Seqno 201512, RBA 2655232

                     SCN 27.2766446061 (118730563053)

Current Checkpoint Detail:

Read Checkpoint #1

  Oracle Redo Log

  Startup Checkpoint (starting position in the data source):

    Thread #: 1

    Sequence #: 200826

    RBA: 1485840

    Timestamp: 2013-07-23 15:25:05.000000

    SCN: 27.2759149410 (118723266402)

    Redo File: \MYDB\DATABASE\GRP5LOG1.LOG

  Recovery Checkpoint (position of oldest unprocessed transaction in the data source):

    Thread #: 1

    Sequence #: 201512

    RBA: 2654736

    Timestamp: 2013-07-24 13:35:11.000000

    SCN: 27.2766446061 (118730563053)

    Redo File: \MYDB