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The _ga cookie value, like GA1.2 or GA1.1, doesn’t correspond to different Google Analytics versions like GA4 or UA. Instead, these numbers are labeled as domain-creation flags where “GA1” is a fixed value, the subsequent “.1” or “.2” corresponds to the domain level of your website, not to the version of the Google Analytics. It doesn’t affect the accuracy or type of data collected from your users. However, if you’re experiencing discrepancy in the data, it may potentially be due to an implementation error or issues with your tag configurations in GTM. It’s advisable to review your implementation in order to ensure it aligns correctly with the Google Analytics and Google Tag Manager documentation on setting up and troubleshooting cookies.
