Change created order number

Question

I lost a few orders at Magento and I am recreating it manually, but I need to keep the old id. I do not have enough information to create all the lost orders, because this some orders id need to be skipped, because this I want to manually put the id of them.

I tried the mysql with the command:

update sales_flat_order set increment_id=100000180, entity_id=180 where entity_id=168;

Thanks in advance