unable to access --asexternal tag as shown in quorum documentation

[tejasborawake8888]

I have go version of 1.17 and qctl 0.20 version.
when i check for available tags in qctl ls nodes --help, i dont see --asexternal as available tag. I tried to use command anyway but it gave tag doesnt exist error.
Could you please help me in finding what is missing?

[tejasborawake8888]

One more thing I found is whenever I use qctl generate network --update command, it reverts all the changes I made in the config files. Is there any reason for this behavior?