Why is it important to keep one unfiltered view when using filters with Google Analytics?

Keeping one unfiltered view in Google Analytics is crucial because it guarantees access to the original, raw data collected before any filters are applied. Filters can modify or exclude data, potentially leading to a distorted view of user interactions and performance metrics. In scenarios where a mistake is made in the filtering process or when filters need to be adjusted to capture different insights, having an unfiltered view allows analysts to cross-reference and verify the integrity of the data. This is vital for accurate reporting, analysis, and decision-making.

While configuring Goals or utilizing filters across different views may be necessary aspects of managing data in Google Analytics, none of these tasks would provide the same safety net that an unfiltered view does. Keeping the unfiltered view ensures that insights can be derived from the original dataset, allowing for corrections and reassessments without losing any data integrity.