UPDATE: I was able to copy a toon to REDSHIRT. However, I am seeing some really odd behavior with this. Mainly, I already had a toon with the same name on REDSHIRT. Transferring a toon with the same name DID NOT give an error and failure! Instead, the new copy was AUTOMATICALLY renamed "S'Kendal 1" (name was updated with a number suffix).
On TRIBBLE, I've already renamed my character copies to S'Kendal 2 and S'Kendal 3, so simply transferring "S'Kendal" should not give any errors at all, yet it does.