Changing Email Tracking Token Prefix

We're on CRM 2016 on-prem using email router and Outlook tracking.

There's a request to change our current email tracking token prefix to something else. So currently we are using ABC:01234 now we want to change to XYZ:01234

Is there anything to worry about when changing the tracking token prefix? Will it break any previously tracked emails, the current tracking process, etc.?

Thanks in advance.

-tri