如何组合来自不同时间点的两个MySQL数据库？

I recently switch to a new hosting provider for my application. My employees used the old site until the new site went live, however, the database backup from the old site was taken two days before the new site went live. So in the midst of transferring, records were being entered into the old site database while the new site had no existence of them (hence my two day time lag). How do I merge the two databases to reflect the changes?I recently switch to a new hosting provider for