Respect!
That seems to me to be the key word.
The changes that were mentioned were worked out in the Merger much of it out of again respect.
This melded the Two Organizations into one. By doing this, there was something left of TKN that was important:
Changing the LXA Pledge Pin, The Coat of Arms, Ritual, The Code of Conduct are a few.
Many of the TKN Brothers had a large hand in redesigning what We as LXA Brothers know today. It should really not be taken lightly and with much respect for those TKN and LXA Brothers who worked this out to make One much larger Fraternity that we are today.
Again, as I said earlier, if one wants to have both sets of letters that would be fine depending on how they were used