Problem transfering character without changing name

So i had an old character on Excalibur with the same name which i use for my main character on Phoenix.
I dont really care about the old character so i wanted to move my main to Excalibur instead- so i deleted the old one on Excalibur.
Now when i go to the transfer service it tells me that i will have to change my name of my 'main' character upon transfering it to Excalibur.

Will i not be able to keep my name somehow when there is no character with that name on the server that i am transfering to?

No. You can keep your name. If the character does not exist on that server you're transfering to, you will not be prompted to name change.

I've done this a couple times goin back to GILGAMESH. Mog station doesn't know that character was deleted yet.

As long as the name isn't taken on the server you'll be fine.