ssh config name alias not working for scp

When you use scp with no additional options like you here, remote h1 tries to directly connect to h2.

h1 -> h2

Since h1 need to know who h2 is, h1 needs the definition of h2. But you could also route it over your PC like

h1 -> your pc -> h2

using the option -3

scp -r -3 h1:/dir1 h2:/dir2

this will help when 'myserver' is used as alias in ssh config file

sudo scp -F ~/.ssh/config -i ~/.ssh/id_rsa some_local_file.zip myserver:some_remote_folder/