| Date | Description |
|---|---|
| 2022-05-19 | delete address Teachers Day 2019-20 Sports Day 2019-20 |
| 2022-05-19 | update primary_contact Teachers Day 2019-20 Sports Day 2019-20 => null |
| 2020-01-22 | insert address Teachers Day 2019-20 Sports Day 2019-20 |
| 2020-01-22 | update primary_contact null => Teachers Day 2019-20 Sports Day 2019-20 |