Tidewater is now the Orioles farmclub. I thought the Braves left Richmond because the stadium grounds were such poor shape that a AAA team would no longer play there. The state wouldnt pay for improvement. It met AA standards so the Squirrels moved in
The Braves got tired of waiting for Richmond to get a stadium plan together, so, they built a stadium in Gwinnett, GA, infringed on their own MLB territory, and left the Richmond market behind. After some upgrading, a double-A team moved there from Norwalk (CT).
As for teams shuffling around and building stadiums, have they started conduction on the new place in Potomac?