Transferring SysAid API configuration to another server

Need a little help with an API

We've made an integration with a 3rd party software via SysAid API, 2 years ago.
This API runs on a different instance of SysAid on another server, and accepts tickets from a 3rd party helpdesk system.
We have another sysaid server, runs locally.
Recently we upgraded this server, published it and now we want API to run on this server, instead of running 2 instances of SysAid.

Does anyone know what do we need to configure on the new server, or copy from the server with working API, so that it will work on the new server?