With the routing test package I have OSPFv3 and I'm trying to announce a IPv6 prefix (/64). Without the networks tab how would I go about that?

That worked.
And since 3.25 fixed the route issue and them still being visable in winbox routing-test is working great. Thanks

every interface on which you want to run ospfv3 to '/routing ospf-v3 interfaces' ....???

every interface on which you want to run ospfv3 to '/routing ospf-v3 interfaces' ....???

Yep. That's the new way to do things - Cisco routers are the same.
Honestly, I like it much much more than networks.
It makes a lot more sense in Cisco, since most of an interface's configurations are grouped together in one place.
Besides, it makes you explicitly activate each interface which is ultimately a good thing.
Better to turn on a routing protocol because you MEANT to than for it to "just be on in the background" - some day that kind of thing will bite you in the @ss.