[UA→GA4] Advanced topics: Extended migration guidesThis section contains extended guides on how to migrate and adapt various Universal Analytics tagging scenarios to Google Analytics 4. [UA→GA4] Data collection and tagging[UA→GA4] How gtag.js for UA maps to GA4 [Legacy][UA→GA4] Tips for switching from analytics.js to gtag.js [Legacy][UA→GA4] Migrate ecommerce data collection from UA to GA4[UA→GA4] Send analytics.js event, timing, and exception hits to Google Analytics 4[UA→GA4] Event migration guide[UA→GA4] About this event migration guide[UA→GA4] Send events to both your UA and GA4 properties[UA→GA4] Goal and conversion migration guide[UA→GA4] About this conversion migration guide[UA→GA4] Google Analytics 4 conversion essentials[UA→GA4] Map Universal Analytics goals to Google Analytics 4 conversions[UA→GA4] Conversion use cases by marketing objective