Help!! On the PS store

I will be saved as a PSD file format, although the format conversion tool, but this is because I work, so also called for a JPG format also allows a teacher to see the completion of the process of preserving the format.Is similar to the one After the PS is to open the page, there are historical records to see.How could such a format, ah, I do not want to redo it!

re-do it again, the process will have a go.shit what a teacher's rancid mind, there is no format can be closed after the open can see the history of the past! I used to study when he also keep 2, 1 There is a kind of layered PSD! You can see the production process! Is a relatively intuitive JPEG