Can we disable schema-checking in slapd?

[Salim Fadhley]

My team has recently inherited a large, critical application which has
a small (but also critical) component based on slapd. Unfortunately
the original developers made a mess of the LDAP schemas. If we were to
try to load the data into a new version of openldap it would just be
rejected.

As a result we have stuck with a very old version of slapd (2.2.19)
because the schema-checking could be disabled. In later versions, it
appears that the schema-checking was forced on (that is, it could not
be disabled) in openldap > 2.2.19.

Given that we cannot correct the schemas (just yet) - I need a
reliable way of running them (unfortunately on Windows) - so does
anybody know if the schema-checking can be disabled on any recent
release of open ldap?

Thanks