Tvheadend

Running HTS Tvheadend 4.3-2023~g26713c1e4, via dockstarter, on Pi 3 Linux sparky 5.15.32-v7+ #1538 SMP Thu Mar 31 19:38:48 BST 2022 armv7l GNU/Linux.
Using this script to trim the list to my liking: https://github.com/bebo-dot-dev/m3u-epg-editor.
Within the the json config file I have:

"groups": [
"US-ENTERTAINMENT",
"PREMIUM MOVIES",
"LOW BANDWIDTH"
This downloads only those groups.
The script has the ability to sort, and transform groups and channels, ie rename the group US-Entertainment to Entertainment, US-LOCALS to Locals, LOW BANDWIDTH ABC West to LBW ABC West.
The script puts out a mylist.m3u8 and mylist.xml, sorted and renamed as above, tvheadend accepts the m3u8 and xml, no issue.
From the webui, the channel names appear as ABC West, the LBW portion is missing, and kodi displays the channel as ABC West.
There maybe more than one ABC West channel, hence the addition of LBW, to differentiate between low bandwidth and normal channels.
Am I missing something in the setup to pass the channel name as received?
Thanks