I'm using a 30-day lookback window with a first-touch attribution model. In the full (holistic) report, the first touchpoint is email, followed later by paid media (Google Search) - so email is credited with the conversion.
However, in a separate report that only includes paid media channels, Google Search is credited instead.
Is this because email was filtered out, and with no earlier touchpoint available in the dataset, Google Search becomes the default “first touch”?
Just want to confirm that this behavior is expected given the attribution model and filters applied.
