Kai Schober has posted the following on UO Herald:
The character copy feature has gone live! This feature will allow you make a copy of your character from any shard that supports transfers to “Test Center 1”. There may be periods of time where this feature will not be enabled due to differences in server versions.
To start a character copy, login with the character you wish to copy and go to a safe logout location such as an inn. Open the help menu and select the “Character Copy” option. Follow the instructions to complete your character copy.
For those who aren’t aware, this is the ability to copy a character from a production shard that supports this feature to Test Center 1. This is not going to be something that is rolled out that allows you to copy characters to other shards. If you want to transfer characters to other shards, those will require the normal tokens and they are not copies, but actual character transfers.
This feature is a way to allow you to copy a character to the Test Center and then use it to try out various things using that character and his or her items. You will not be able to transfer/copy that character from the Test Center to production shard. This is a feature that will come in handy as we move towards the PvP arenas being implemented at some point in the future.