There shouldn't be any issues, as long as version is the same or higher.
But if course make sure you have a backup.
Thanks Anton, one more question, could I have 2 Traccar servers connected to the same database?
Yes, but it's not a good idea. There could be synchronization issues.
And also it's only possible if both servers are the save version.
I am setting up a new Traccar server and I want to set up a database from another Traccar server. What risks might exist? Is there a possibility that the new server will delete the data, or what risks or conflicts might exist?