PreHog logoPreHog
POST

Complete GA4 Migration Checklist for 2025

By PreHog TeamPublished on: January 25, 20258 min read
Complete GA4 Migration Checklist for 2025

Why GA4 Migration Is Critical

Google Analytics 4 isn't just an update—it's a complete reimagining of how we track and analyze user behavior. If you haven't migrated yet, you're missing out on powerful insights.

Pre-Migration Checklist

Before you start, make sure you have:

  • [ ] Admin access to your GA4 property
  • [ ] Documentation of your current UA setup
  • [ ] A list of custom events and conversions
  • [ ] Stakeholder approval for the migration timeline

Step 1: Create Your GA4 Property

Navigate to Admin → Create Property in Google Analytics. Choose "GA4" and follow the setup wizard.

Step 2: Map Your Events

GA4 uses an event-based model instead of sessions. Map your UA events to GA4 equivalents:

UA EventGA4 Equivalent
Pageviewspage_view (automatic)
Transactionspurchase
GoalsConversions

Step 3: Configure Data Streams

Set up your data streams for web and app tracking. This is where you'll get your measurement ID.

Step 4: Implement Enhanced Measurement

GA4's enhanced measurement automatically tracks:

  • Scrolls
  • Outbound clicks
  • Site search
  • Video engagement
  • File downloads

Enable what makes sense for your business.

Step 5: Validate Your Setup

Use the DebugView in GA4 to verify events are firing correctly. This real-time tool is invaluable for troubleshooting.

Common Pitfalls to Avoid

  1. Don't delete UA too soon: Run both in parallel for at least 3 months
  2. Don't ignore data retention settings: GA4 defaults to 2 months
  3. Don't forget custom dimensions: These need to be recreated

Conclusion

Migration takes effort, but GA4's event-based model provides much richer insights into user behavior. Start your migration today.

FAQ

Frequently Asked Questions

PreHog is an AI-powered analytics agent that connects to your data sources (GA4, PostHog, Search Console, etc.) and automatically surfaces insights, anomalies, and growth opportunities.

Absolutely. PreHog uses read-only access to your analytics platforms. We never store your raw data—only the insights we generate. All connections are encrypted and SOC 2 compliant.

GA4 shows data, PreHog tells you what matters. It automatically identifies anomalies, correlates metrics across platforms, and delivers actionable insights in plain English.

PreHog integrates with Google Analytics 4, Google Search Console, PostHog, Mixpanel, Amplitude, and more. We're constantly adding new integrations.

Not at all! PreHog is designed for marketers and founders, not data scientists. Ask questions in plain English and get clear, actionable answers.

No! PreHog translates complex data into plain English insights. Just describe what you want to know, and PreHog handles the technical analysis.