Uploading to a Force 10 switch

I am having an issue uploading to a force 10 switch. I am testing my network and copy the config file from the switch to the usb. Then I factory reset the switch and upload the same config file back onto the switch. The file uploads successfully the show run shows that everything is there. Port configurations, username, password etc etc however the network is not working. I have to still hand input the port configurations and the network starts working again. Any ideas on why this is happening ??