Why are these two EXPORTs different ????

TSM server on z/OS 4.2.3.2

I am cleaning up old TSM nodes by first EXPORTing them, TWICE (just in
case) and then deleting them. Normally I don't pay a lot of attention to
them. This time, was different.

Here is the stats on the first export:

****************
01/31/2003 14:56:55   ANR0610I EXPORT NODE started by ZFORRAY as process
635.
01/31/2003 14:56:57   ANR0635I EXPORT NODE: Processing node VENUS.VCU.EDU
in domain UCSAC.
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space /var for
node VENUS.VCU.EDU fsId 1 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space / for
node VENUS.VCU.EDU fsId 2 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space /usr for
node VENUS.VCU.EDU fsId 3 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space /home
for node VENUS.VCU.EDU fsId 4 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space /home1
for node VENUS.VCU.EDU fsId 5 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space /usr/ac
for node VENUS.VCU.EDU fsId 7 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space
/usr/local for node VENUS.VCU.EDU fsId 8 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space
/usr/local/lib/WWW for node VENUS.VCU.EDU fsId 9 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/index for node VENUS.VCU.EDU fsId 10 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/work for node VENUS.VCU.EDU fsId 11 .
01/31/2003 14:56:57   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/client for node VENUS.VCU.EDU fsId 12 .
01/31/2003 23:29:23   ANR5324I Assigning volume 040041 to EXPORT.
02/01/2003 03:50:20   ANR0617I EXPORT NODE: Processing completed with
status SUCCESS.
02/01/2003 03:50:20   ANR0626I EXPORT NODE: Copied 1 node definitions.
02/01/2003 03:50:20   ANR0627I EXPORT NODE: Copied 11 file space 2180
archive files, fsId0, 422581 backup files, and 0 space managed files.
02/01/2003 03:50:20   ANR0630I EXPORT NODE: Copied 31965653 kilobytes of
data.
02/01/2003 03:50:20   ANR0611I EXPORT NODE started by ZFORRAY as process
635 has ended.
02/01/2003 03:50:20   ANR4006I EXPORT NODE: Volume 1 written by process is
040486.
02/01/2003 03:50:20   ANR4006I EXPORT NODE: Volume 2 written by process is
040041.
02/01/2003 03:50:20   ANR0986I Process 635 for EXPORT NODE running in the
BACKGROUND processed 424773 items for a total of 32,732,829,238 bytes with
a completion state of SUCCESS at 03:50:20.
***********************
Here is the second:
***********************
02/03/2003 09:31:30   ANR0610I EXPORT NODE started by ZFORRAY as process
691.
02/03/2003 09:40:07   ANR0635I EXPORT NODE: Processing node VENUS.VCU.EDU
in domain UCSAC.
02/03/2003 09:40:07   ANR0637I EXPORT NODE: Processing file space /var for
node VENUS.VCU.EDU fsId 1 .
02/03/2003 09:40:07   ANR0637I EXPORT NODE: Processing file space / for
node VENUS.VCU.EDU fsId 2 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space /usr for
node VENUS.VCU.EDU fsId 3 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space /home
for node VENUS.VCU.EDU fsId 4 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space /home1
for node VENUS.VCU.EDU fsId 5 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space /usr/ac
for node VENUS.VCU.EDU fsId 7 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space
/usr/local for node VENUS.VCU.EDU fsId 8 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space
/usr/local/lib/WWW for node VENUS.VCU.EDU fsId 9 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/index for node VENUS.VCU.EDU fsId 10 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/work for node VENUS.VCU.EDU fsId 11 .
02/03/2003 09:40:08   ANR0637I EXPORT NODE: Processing file space
/usr/lpp/SM6000/client for node VENUS.VCU.EDU fsId 12 .
02/03/2003 18:30:23   ANR5324I Assigning volume 040226 to EXPORT.
02/03/2003 19:12:00   ANR0617I EXPORT NODE: Processing completed with
status SUCCESS.
02/03/2003 19:12:00   ANR0626I EXPORT NODE: Copied 1 node definitions.
02/03/2003 19:12:00   ANR0627I EXPORT NODE: Copied 11 file space 2180
archive files, fsId0, 422581 backup files, and 0 space managed files.

02/03/2003 19:12:01   ANR0630I EXPORT NODE: Copied 31965653 kilobytes of
data.
02/03/2003 19:12:01   ANR0611I EXPORT NODE started by ZFORRAY as process
691 has  ended.
02/03/2003 19:12:01   ANR4006I EXPORT NODE: Volume 1 written by process is
040819.
02/03/2003 19:12:01   ANR4006I EXPORT NODE: Volume 2 written by process is
040226.
02/03/2003 19:12:01   ANR0986I Process 691 for EXPORT NODE running in the
BACKGROUND processed 424773 items for a total of 32,732,829,235 bytes with
a completion state of SUCCESS at 19:12:01.

**********************

They both look the same, except for the last line in each.....the TOTAL
BYTES.............

There are *3* bytes missing between the two exports (....235 vs ....238)
??????????????????????

While this may seem insignificant, it is still unsettling.........what if
those 3-bytes were a crucial piece of a crucial file ?

What gives ?  Why the discrepency ?