that's correct, this is exactly this step.
If you modified the file
local_conf.json (such as setting email contact, gateway info) the
opkg upgrade will replace it so you have 2 options:
- modify the new file again to put your changes again
- copy back the file you saved (on the lorix only) before by reverting the cp command to
cp local_conf.json.ch2i local_conf.json
PS : If you didn't touch the original file, don't worry nothing to do