Multiple Calls dropping into same extension

[ghgp]

Hello,

I am having problems where calls are dropping in on an outbound campaign while the agent is already speaking with another customer.
I am using a very old version of ViciDial, we will be migrating to the latest ViciBox 6.0.2 release at the end of the year, but I need to try and resolve this issue.

VERSION: 2.2.1-237
BUILD: 100510-2015

MySQL Spec: 24 core AMD system with 120GB of RAM - CPU load average: 0.23, 0.12, 0.09
10 ViciDial telephony servers (let me know if you need the specs).

All phones are configured as external and do not register directly to the telephony server.

ViciDial -> Admin -> Conferences show a range between 8600001 and 8600049 for each telephony server, but duplicated i.e. Conference: 8600001, Server IP: 192.168.10.13 and then another same entry below it.
I haven't been able to spot any duplicates under Admin -> Conferences -> Show VICIDIAL Conferences, however the conference range is different, starting from 8600051 with last entry 8600299.

Could this be an issue? How safe is it to delete the duplicated entries?

Thanks for any help. Let me know if there is any other information you need.

[ed123]

Post the asterisk logs during the issue happens