In searching the Internet, I found another post that stated that tvheadend needed to be restarted after moving the config file. I did this, at the debug output has changed as shown below:
Nov 09 21:08:48 /usr/bin/site_perl/tv_grab_na_dd: grab /usr/bin/site_perl/tv_grab_na_dd
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: grab took 130 seconds
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: parse took 0 seconds
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: channels tot= 10 new= 0 mod= 0
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: brands tot= 0 new= 0 mod= 0
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: seasons tot= 0 new= 0 mod= 0
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: episodes tot= 0 new= 0 mod= 0
Nov 09 21:10:58 /usr/bin/site_perl/tv_grab_na_dd: broadcasts tot= 0 new= 0 mod= 0
The data is being downloaded now. However, nothing is being displayed in the EPG window. According to the debug output, I have ten channels available, but not a damn thing available for viewing!! I opened the file I manually downloaded, and it does contain lots of broadcast info.
What criteria is being used to think that no broadcasts or episodes are in the download file?