How do you copy and paste an uncopylocked place onto another place on roblox

the new version of roblox:you go to an uncopylocked place and press play solo then go down to the bottom left hand corner and go to roblox studio then press save at the top left corner then go to your place and press open on roblox studio then it should come up on the screen but now i dont know how you get it to actually paste on and delete the starting template/original place so i cant help you with the pasting part!