I'm in the same situation. Tried moving from one legacy server to another. No go.

There was a solution to this problem they could have introduced a long time ago but didn't. Instead of adding new servers that no one uses like Yojimbo, add 1 or 2 Legacy servers so the prisoners already stuck on Legacy have more room to move around.

Every legacy player is stuck on these servers. Every player who made a character on legacy servers is stuck on these servers. Every player who is moving to these servers now (assuming they even can) are going to be stuck on these servers and not allowed to leave. SE needed to pull their head out of their ass and fix this situation, but they didn't, and now they never will, all we can do now is hope they make our status as prisoners on these servers shorter and open up the new servers to us soon. These servers are going to get more and more crowded and we're stuck with fewer and fewer options.