discrepancy with rndc dumpdb -zones

[Gordon A. Lang]

After several successful "update delete ..." nsupdate sends to the master
DNS server, verified with dig, the "rndc dumpdb -zones" command produced
named_dump.db file still showing the deleted records.  This was repeatable
and persistent (over the half hour time period) until I performed a hard
restart of named.

Has anyone else seen this sort of thing?

Can anyone explain this?

--
Gordon A. Lang