How to best clean results from automated tests

We're starting the process of implementing RQM. We have many hundreds of test scripts that have been written over a long period of time, and one of our concerns is that they don't always return accurate pass/fail results.  We get many false failures.  We've dealt with this by manually reviewing test log files and deciding what failures are real and which we can ignore. We want to do better with RQM, but cleaning up all our tests will take time.

If we execute these test cases automatically and the results are loaded back into RQM, then any reports will not be accurate because of the original bad data. Therefore, is there a way to efficiently review the test results in RQM and modify the results accordingly?  Any suggestions on how to handle this situation are very welcome.

thanks