invenio-migrator is dumping the records from hstRECORD table and the first entry of this table is in 2003-05-30 so before this date records dont have any revisions.
This causes the old records(older than 2003) are missing their initial revision in the table. This leads to an incorrect creation_date, since the first available revisionis not the actual record creation. In this case bibrec table has the correct creation date.
invenio-migratoris dumping the records from hstRECORD table and the first entry of this table is in2003-05-30so before this date records dont have any revisions.This causes the old records(older than 2003) are missing their initial revision in the table. This leads to an incorrect creation_date, since the first available revisionis not the actual record creation. In this case bibrec table has the correct creation date.
2003-05-30has the same date in both tables2003-05-30has different datesinvenio-migratorto get the correct date