if looking at editing an m3u playlist for your Live channels, then yes you can place channels in any order or delete channels too. But do not change the channel data in each channel line, included the channel number.
Its a fairly big project to do all the work.
In the end, you would be using an edited m3u Playlist file, or a few edited playlist files and loaded thru USB drive onto the T2
You would also need an EPG url included in the T2 setup, and as long as you do not change the channel data and only organize or delete channels, then the EPG data should work.
It is some work, and you'd have to keep upon any channel changes done at the server and add them accordingly to your list(s). And the learning curve can be daunting to completely understand how it all works.
Well, maybe not 'daunting' .. but time consuming at the least.
Best is to forget all that and use the Groups categories on your T2 and forget about alphabetical order for Live TV channels.