Avaya P133G2

I’ve got dozen Avaya P133G2 and P134 switches in my network environment. I wanted to reboot some of them, because 5 years working 24/7. As I made some changes during this period (VLANs, ports,etc.) I decided to save configuration in startup-config from running-config, but found out that there is no such files on them, only module-config and stack-config. Where all the information about security is kept? I am afraid that when I reboot I’ll lose all my recent changes.