trunk failover on ly works on Default route

Dear Pbxes,
I found out that the automatic trunk failover works only for the default route.

These are the steps to replicate the issue

- create 3 trunks (TA, TB, TC)
- set two outbound routes (O1, O2)
- create extension 200

01 with trunk priority TA, TB, TC and extension condition 200
02 with trunk priority TB, TA, TC withoud extension condition

- make a test call to a invalid number, let's day 060
- look at the system log, you'll see this call flow

Pbx uses the first trunk (TA) from outbound route 1 (O1_TA)
O1_TA fails
Pbx tries with the second trunk from outbound route 2 (O2_TA)
O2_TA fails
Pbx tries with the third trunk from outbound route 2 (O2_TC)

As you will see O1_TB and O2_TC will be ignored.

Could you please look into this issue?