How to RUN Same test cases for different application

I have a TestNG framework for one of my application , I am executing it and getting successfull report using Extent reporting feature ..

I want to run the same test cases for a different application as it also has the same data and fields it's just the URL is different ..

Using below - Maven , TestNG -have all test cases in TestNG.xml using priority. -invoking the application URL through @before class method - then running all other test cases..

please suggest how should I begin ?? as If i am running test passing both the URL's one by one and then all other test case biut in this case the report will get overight with the latest run..