Routing response traffic

Hi

My router has two Internet uplinks

When I connect, from outside, to the uplink interface
that is designated as default route, I can get through

When however I connect, from outside, to the second
uplink interface, the response is transmitted through
the default route and my connection isn’t successful

Is there a way to route (mangle) an outgoing response
e.g. winbox access, through the uplink it actually came
in from ? Are incoming marked packets still identifiable
on their way out of the router ?

Thanks
yann

simply remove on default route pref src address, activate connection tracking, and the device are reachable on both link.

thanks rextended