When using the IP Office Manager program on a PC, the configuration is held in the Manager application until it is saved to the control unit. It is not automatically saved to the control unit every time OK is selected, automatically backed up to the SD card every five minutes, or dynamically updated to the control unit after every keystroke.
Reference:
Avaya IP Office (https://www.avaya.com/en/solutions/ip-office/).
Avaya IP Office Manager (https://help.avaya.com/DOCS/IP_Office/Server%20Edition/IPO_SE_Manager_EN.pdf).