Learn business growth with Google Analytics 4 › Forums › Google Analytics 4 › Transitioning from UA to GA4: Implications and Code Reuse › Reply To: Transitioning from UA to GA4: Implications and Code Reuse
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No worries at all! When you switch to GA4, it operates independently and won’t stop collecting data if UA stops. You do need to replace your old analytics.js code and keys with the new GA4 ones because they’re different systems. If data collection stops, simply, you’ll just stop receiving updates on user interactions with your site.