Hello,
please I have problem with ssh session timeout. I tested it on RB600A with RouterOS 4.5, 4.6 and 5.0beta1 with the same result on each.
With simple commands like "/something print" it is no problem, but when importing a src file the error appear.
The problem is, that the command have to finish in 60 seconds, otherwise the error appears.
I tried to use ssh keep-alive and tcp keep-alive on client side with no success. As far I know there is no configuration on ssh service on Mikrotik.
Thanks for suggestions.