DBUA - ORA-0019 invalid specification for system parameter LOCAL_LISTENER ORA-0032: syntax error or

I was trying to follow this doc https://docs.oracle.com/database/121/UPGRD/upgrade.htm#UPGRD105 

in order to upgrade from 11.2.0.4 to 12.1.0.2.  The process fails immediately with the subject error:

ORA-0019 invalid specification for system parameter LOCAL_LISTENER ORA-0032: syntax error or unresolved network name 'LISTENER_T1104'

Mixed signals all over the place on this.  This guy says you have to move the spfile or init.ora to the target ORACLE_HOME.  He also says you have to copy the TNSNAMES and LIstener.ora to the target.

https://pavandba.com/tag/dbua-failing-with-local_listener-parameter-error/

This is confusing.  Why does the guide not say any of this, or perhaps it is false.  Something is off, for sure.