Prefix problem on incoming calls

[chrischevy]

FreePBX 15.0.17.43, all module updates and system updates made.

I have a small issue with Prefixes on incoming calls:

Here is the callflow:
Inbound Route (adds Prefix1, depending on which DID was dialed) ===> Reception Phone rings (and shows Prefix1 CallerID)===> IVR if no answer ===> Add Prefix2 depending on the choice made in the IVR (IVR options all lead to Queues where the Prefix2 is added)

Normally, I would think that the resulting caller ID should be: Prefix2 Prefix1 CallerID (the latest prefix always being added to the left)
But the result is: Prefix2 CallerID
The Prefix1 is removed in the process.

Am I missing something ?
In the CDR, I see Prefix1 when the phone rings, then when the IVR answers, the next line in the CDR no longer shows the prefix. So I guess that it is removed when the IVR answers.

[adell4444 (Andrew)]

AFAIK CID Prefix doesn’t append - it will only display the most recent prefix that has been set in the dialplan, so it is working as intended.

[PitzKey (Itzik)]

Under advanced setting, set this to No. (You may need to enable Display Readonly Settings and Override Readonly Settings)

[chrischevy]

Nice find ! Thank you, I will try this right away.

[chrischevy]

It worked, thank you !