If you want to rerun an experiment quickly, but want to save the current data as well, perform the following steps:

1. With the data record of interest open, select Experiment>>Save As, and save the data with the file name that you want for the re-analysis. When you enter a new name and select OK, that record becomes the active record, and the other record is simply closed.
2. Delete all the points on the new record, and rerun. If you wanted to change the properties, you could, after deleting all the data points, select Experiment>>Properties, and enter new values for the parameters that you wish to change, then re-run.