Change order increment_id of existing orders

Question

In a test system I would like to change increment_id for all orders. Otherwise I would get conflics with another module.

Can I simple change increment_id in sales_flat_order or will this messup Magento?

Answer 1

According to this it should be fine to change sales_flat_order.

I run two querys to change order id:

UPDATE sales_flat_order SET increment_id = CONCAT('10-', increment_id);
UPDATE sales_flat_order_grid SET increment_id = CONCAT('10-', increment_id);

And no problems so far.

Update

As mentioned by R.S. you may also like to change the next order id prefix.

Here is some untested code for this:

UPDATE eav_entity_store
INNER JOIN eav_entity_type ON eav_entity_type.entity_type_id = eav_entity_store.entity_type_id
SET eav_entity_store.increment_prefix='10-'
WHERE eav_entity_type.entity_type_code='order';

Also you might need to change increment_last_id in eav_entity_store but I am not sure. I did not need this.