Implementation recovery
Shopify Checkout Extensibility Transfer: conversions started counting again
Rejuvica needed to migrate all GTM and GA4 scripts from Shopify's legacy checkout.liquid into the new Shopify Checkout Extensibility environment before it was deprecated. Over a 30-day engagement, we secured access, audited their existing setup, migrated client-side scripts into Shopify Pixels, consolidated multiple GA4 properties, implemented brand attribution via an rbidCookie, and stood up a Stape server-side container. The result was a seamless cut-over with zero data loss, unified analytics reporting, and fully reliable purchase tracking.

What was broken
- Shopify's deprecation of checkout.liquid threatened existing tracking
- Complex multi-brand GA4 setup with URL-based property switching
- Mixed UA, GA4, GTM and external-page snippets risked data gaps
- Need for seamless cut-over without any loss of purchase data
What we rebuilt
- 01Re-implemented all checkout scripts as Shopify Pixels via Extensibility
- 02Consolidated GA4 properties into a single Measurement ID using GTM and Shopify's app
- 03Built a robust rbidCookie attribution layer, extended to handle edge-case SKUs
- 04Deployed Stape server container with TikTok API to guarantee event delivery
What started working again
- Zero data loss during migration—100% of checkout events captured
- Unified GA4 reporting under one property reduced complexity by 75%
- Real-time, accurate brand attribution across multiple domains
- Scalable server-side pipeline ensured 100% event delivery under all conditions
“I had the pleasure of working with Shahzada on resolving some complex Shopify, Google Tag Manager, and Google Analytics tracking issues, and I couldn't be more satisfied with the outcome. Despite the significant time difference, Shahzada was very responsive when addressing every question and concern I had. His patience and expertise were evident throughout the process. Shahzada provided a clear and detailed plan, meticulously documented all changes, and executed the tracking setup with precision. His deep knowledge in setting up and debugging tracking systems ensured everything was handled flawlessly. I highly recommend Shahzada for anyone in need of expert consultancy in these areas. His professionalism and efficiency make him a great choice.”
MMichael Quinn
Digital Markerting Agency Owner
Delivery path
- 01
Access & Audit
Secured cross-platform access to GTM, GA4, Shopify backend and audited all existing checkout scripts.
- 02
Checkout Extensibility Migration
Removed all GTM/GA scripts from checkout.liquid and re-implemented them as Shopify Pixels in the new checkout UI.
- 03
GA4 Consolidation
Disconnected legacy UA, consolidated multiple GA4 properties under G-1MSDW7HTQE via GTM and Shopify's Google app.
- 04
Brand Attribution & QA
Implemented the rbidCookie logic and extended the brandDictionary to handle multi-word SKUs. Validated DataLayer pushes across all branded domains.
- 05
Server-Side Tracking Setup
Configured the Stape server container, integrated TikTok Event API, and tested end-to-end event delivery under ad blocker scenarios.
Stop another blind week
Phone ringing. Meta empty. Path clear after we name the restriction.