Building a generic Datamodel + Reports for different datasource environments

Hello,

we would like to build a "generic" PowerBI Report Set + Data Model that we can easily match to a new customer environment.

In our case we've built a couple of reports with a lot of powerquery tables in the background to analyse ERP + Ticketing Data. There are plenty of customers with the same demand and we would like to "recycle" our work in their environments.

The problem is: When i copy the whole powerquery XML code, i loose all of the relationships i made. When i copy the whole pbix file i have to manually adjust the environment specific variables in the powerqueries (DB name, hostname, etc.).

Is there a way to build a "generic" report/ app where i can work with variables which can be filled when creating a new version?