WE have a project currently running where we created two test runs. We’ve now realized that we should have just created one test run and grouped everything together. Is there a way to take the results from the first test run and migrate them into the second test run so that all information/results are stored together?
No, that is IMHO not possible.
You would have to enrich one of them with the results from the other by adding the cases and afterwards new results and delete the other run. Either manual or supported via the API.