Hi I have a QX50 with the following setup

SIP line sent to virtual "user extension" 40 which has "multi extension ringing" enabled for ext 103, 104, 105, 106 etc. I need the voicemail though to end up in ext 104 voicemail box.
I have the same scenario working on a 2x successfully
On the QX50 as on the 2x I have added 104 to the "shared mailbox" edit "voicemail access list", however voicemails are still ending up in the virtual extension 40 mailbox?

Am I missing a step or something? is there something hidden I must set? It works on the 2x they go to the nominated mailbox not the virtual extension.

Thanks in advance for any assistance