It is generally a good idea to have a couple views in your google analytics property for different purposes.

• One view should be totally unfiltered, rendering raw data without any adjustments.
• As the second view you could set up a “testing view” for all the times you need to test a filter or try other adjustments of the data collected.
• The most important view is your Main or Master-View – as this is the view you’re going to work with the most. All successfully tested filters from the test view can then also be rolled out to your main view.