Static route config doesn't work

I am trying to configure a static route on my Mikrotik HAP AC lite, but it doesn't seem to take.

Current Version: 3.24.10.0
Hardware Type: (ath79/mikrotik) mikrotik (routerboard-952ui-5ac2nd) 

I first added the route by hand and it worked perfectly. It shows up in the routing table and I can send packets over it:

root@w6dlk-hap-private:~# route add -net 192.168.169.0 netmask 255.255.255.0 gw 10.242.70.99 br-lan
root@w6dlk-hap-private:~# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
0.0.0.0         172.19.9.1      0.0.0.0         UG        0 0          0 br-wan
10.0.0.0        0.0.0.0         255.0.0.0       U         0 0          0 br-dtdlink
10.0.0.0        0.0.0.0         255.0.0.0       U         0 0          0 wlan1
10.242.70.96    0.0.0.0         255.255.255.248 U         0 0          0 br-lan
172.19.9.0      0.0.0.0         255.255.255.0   U         0 0          0 br-wan
192.168.169.0   10.242.70.99    255.255.255.0   UG        0 0          0 br-lan
root@w6dlk-hap-private:~# ping 192.168.169.1
PING 192.168.169.1 (192.168.169.1): 56 data bytes
64 bytes from 192.168.169.1: seq=0 ttl=64 time=1.769 ms
64 bytes from 192.168.169.1: seq=1 ttl=64 time=1.276 ms
64 bytes from 192.168.169.1: seq=2 ttl=64 time=1.732 ms
^C
--- 192.168.169.1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 1.276/1.592/1.769 ms

I know this won't persist across a reboot, so I edited /etc/aredn_include/static_routes and appended:

config route 'openvpn'
    option interface 'br-lan'
    option target '192.168.169.0/24'
    option netmask '255.255.255.0'
    option gateway '10.242.70.99'