I've ran the migration script to migrate my platform from 6.3.2 to 7 and in the sequence of steps, I get an error:
Failed to execute:
[ Migrating 2/7 ]
| Description : Update Business Data
DROP TABLE ref_biz_data_inst
because: Cannot delete or update a parent row: a foreign key constraint fails
Before running the migration script, I backed up mySQL database. I ran the backup SQL script which ran successfully.