openldap fails with "marked but not imported" for an ancient package version

openldap is currently failing to import with this error:

Traceback (most recent call last):
  File "/srv/package-import.canonical.com/new/scripts/import_package.py", line 1138, in <module>
    only_before=options.only_before))
  File "/srv/package-import.canonical.com/new/scripts/import_package.py", line 1030, in main
    revid_db, bstore, possible_transports=possible_transports)
  File "/srv/package-import.canonical.com/new/scripts/import_package.py", line 669, in find_unimported_versions
    importp.version, importp.distro, importp.release)
AssertionError: openldap 2:1.2.12.1-1 debian woody is marked but not imported

woody was a long time ago, and this failure didn't start happening until recently (the debian import branch has the latest upload as of April 12).

It's possible that there was an openldap 2:1.2.12.1-1 source package way back then, but if so it's been long since forgotten by the Debian archive - the current openldap package is at version 2.4.25-5, after having gone through multiple name changes (openldap->openldap2->openldap2.1->openldap2.2->openldap2.3->openldap). The importer should forget about trying to import this old version, by whatever means necessary, because that's gone beyond archaeology into the realm of paleontology.