I am using magento on my site. initially order number were generated like 1000000123, 1000000135 and so on. But for the last one week it id using a different pattern to generate the otder number which is based on current date. Here are few order numbers generated in lst one week:
20150623171312, 20150623171415, 20150624060656
Can anyone help me to change the order pattern as it was earlier. (1000000123, 1000000135)
Have you installed all the recommended Magento security patches?
Did you install any order management related extension?