Subnet change and now limited VPN

I had the subnet for our internal network at 255.255.255.0 and now we are moving to 255.255.254.0

The old range we used was 192.168.1.1 - 192.168.1.254

The new range is 192.168.0.1-192.168.1.254

I updated the internal network on Forefront and now the 192.168.0.x computers can get on the internet no problem. When I connect into the VPN and get a 192.168.1.x address I can connect to any other computer on 192.168.1.x but nothing on 192.168.0.x

If I give myself an ip of 192.168.0.x then I can see 192.168.0.x computers but no 192.168.1.x

Does anyone know what I am missing?

Thanks so much