It sounds like your new subdirectory (abc.com/au) is still sending data to your old Google Analytics (GA) property, which could be due to incorrect tracking settings or tag configuration. Here’s how you can solve this issue:

Steps to Fix the Issue:

1️⃣ Check Your GA4 Data Streams

In Google Analytics 4 (GA4), go to Admin > Data Streams Verify that the correct Measurement ID (G-XXXXXXXX) is implemented for the subdirectory (abc.com/au).

2️⃣ Ensure the Correct GA Tag is Used

In Google Tag Manager (GTM), open Tags and check the GA tracking ID used. If the old GA tracking ID is still there, update it with the correct one for your subdirectory.

3️⃣ Use a Separate GA Property (If Needed)

If you want separate tracking for abc.com/au, create a new GA4 property and update its tracking ID in the GTM container for the subdirectory. This ensures that sessions from abc.com/au go to the new GA4 property instead of the old one.

4️⃣ Filter Data in GA4 (If Keeping One Property)

If you prefer keeping everything under one GA property, set up custom reports or exploration reports to filter data specific to abc.com/au. You can also apply Segment Filters in GA4 to analyze traffic only from the /au directory.

5️⃣ Validate with Debugging Tools

Use Google Tag Assistant or GA Debugger Chrome extension to check which GA property ID is firing when visiting abc.com/au. Open your site, inspect the Network tab > Google Analytics requests, and confirm the correct tracking ID is used.