Ring Groups between peered FreePBX installations

Two SIP trunked FreePBX installations (peer - user)

Extensions work perfectly.

However when dialing Ring Groups on the other box the calls come as external calls with the group number as DID. This can be worked around by adding an Inbound Route for each group but that’s tedious and hard to maintain.

I’m pretty sure this worked without the routes in the past. Is there any other way to do it? Am I messing something in the trunk?

PEER details (same on both sides)

type=peer
trunk=yes
disallow=all
allow=alaw
host=pbxip
secret=******
context=from-trunk
qualify=no
username=username
fromuser=username
auth=plaintext
requirecalltoken=no
nat=yes
dtmfmode=rfc2833
canreinvite=yes

USER details (same on both sides)
secret=*******
context=from-trunk
type=user