Good morning
Is it possible to make a central backup of only the forms? And redeploy this on a new server?
Actually I want to change server but I want the collectors in the field to use the same links in odkcollect to collect the data.
So on the new server I want to have the same projects and same collection links as on the old server
You can migrate to a new server and use DNS redirect on the old server so there is no disruption. See Migrate Central from one server to another.
If you don't wanna do that, I'd probably use the REST API to bulk download the forms you want to use on the new server. https://docs.getodk.org/central-api-form-management/#retrieving-form-xls-x is the endpoint you should use.