# ask-questions


12/06/2022, 4:41 PM
Hi GB team! We're close to getting A/B testing fully implemented. Currently implementing GA4 with a Firebase project but thinking if there's a quicker way without the scary thought of moving away from UA. Am I right in thinking you could have a function on your app push data into a db like BigQuery with just the barebones data needed since we already generate userIds. This would have the columns; userId, timestamp, experimentId, variantId and and event (the ones you want to track) and create the metric in the the dashboard from this data?


12/06/2022, 4:45 PM
There are lots of ETL tools that can sync data from UA to a data warehouse. For example - AirByte ( Alternatively, you could add an additional event tracking call in your app in parallel with UA using a tool like Segment, RudderStack, or Jitsu.


12/06/2022, 5:02 PM
Thanks for the prompt reply. I think we'll be moving away from UA it'll be deprecated soon. I'll have a look into those suggested but in the meantime, would what I suggested sill work? Thinking of it as a custom free version where you could select "Use Custom Source" until a decision is made for a more comprehensive tracking tool