Nexthop redistibution in iBGP - bug?

I have a problem and I don’t know if it is a bug in Mikrotik’s BGP.

I have two routers - A and B with iBGP sessions between them without any filters. Router B has only one session with router A, and router A has several eBGP sessions. Router A uses filter to set nexthop of some routes and it works fine on router A. The problem is that rotuer B sees the routes with unchanged nexthop and I think it should see new (set by me) nexthop instead of the old one.

Am I right? I think quagga redistributes changed nexthop, not the original one. Can somebody from Mirkotik reply?

Thanks, regards,

Gregor

Noone?