Alt+... - select/copy/paste

cmd -new_console
cmd -new_console:a
notepad -new_console

vim redraw issue
https://github.com/Maximus5/ConEmu/issues/1143
Setting ttyscroll to a low value solved the issue entirely for me as well.

http://tahirhassan.blogspot.com.by/2017/10/conemu-redraw-problems-with-vim.html
Apparently, adding this to your vimrc file fixes the issue:

set ttyscroll=0