Yes. If you didn't transfer your characters they are lost.
Uh, I am pretty sure the transfer was automatic if we are talking about the "North America" server merge. I didn't have to do anything to move any of my characters, and I had multiple on East, Australia, and West servers. Granted I was active during merge, but don't know if it's different if you were inactive for X amount of time.
The only thing that was "deleted" would be your character name changing if there was another person with more hours with the same name on a different server, and Nexon gave a free name change to those affected.
OK so I cheat a little bit and toggle UI here and there hue, but if any of you are interested here's my solos. +drunk
Unfortunately I don't have all of them, but I mainly just record the ones I consider interesting or fun. :P I also have many more videos up on the editing block, so stay tuned for those!+best