Question about archecker

Running IDS 10.0.FC4 on AIX 5.3 - I took an onbar backup using ISM, which ran without error. Then I tried the table-level restore tool to pull a table off the backup. It seemed to work fine, but the ac_msg.log file had a bunch of errors (warnings?) in it (below). I ran an onbar -v and got the same thing, but it says that the check passed: ERROR: Invalid chunk number 0 ERROR: Unable to convert extent (8) ERROR: Invalid chunk number 0 ERROR: Unable to convert extent (8) ERROR: Invalid chunk number 0 ERROR: Unable to convert extent (8) ERROR: Invalid chunk number 0 ERROR: Unable to convert extent (8) ... ERROR: Invalid chunk number 0 ERROR: Unable to convert extent (8) STATUS: Scan PASSED TIME: [2006-05-30 07:29:32] Scan completed STATUS: Archive Validation PASSED. The dbspace involved is the default dbspace for a database that includes a number of fragmented tables. Is that what's causing this? If so, it's presumably not a big deal, but I wanted to be sure. Thanks. DC