Confusion with gateways

Hello!

There are 2 mikrotiks, linked with pptp. One is 10.159.0.1 (main office), second is 10.159.1.253 (remote offiсe). Users from second office goes to Internet through their mikrotik (1.253) but we wants they goes to Internet through main office. But when I changed main gateway on workstation in remote office from 10.159.1.253 to 10.159.0.1, it still goes to Internet through 1.253 (see screenshot). How can it be? What should I do, maybe turn back gateway on workstation to 1.253 and configure a http-redirection on 1.253-mikrotik to main mikrotik?
1.jpg

Do you use A nets ???
Strange subnet mask.
255.0.0.0

May use C net subnet mask.
255.255.255.0

Yes, I use A nets. Why I can’t use it? It should works?

Problem is still not solved..)

I think we need more information about how the connections work. Your PPTP connection isn’t an L2 connection so the router on the other end can’t be a first hop router for clients. Also if your using 10.0.0.0/8 on both sides of your PPTP link you have overlapping subnets and your computers will think everything is local and won’t know to send it to the router.