We had the same issue and it is caused by the latest release either making the timezone parameter on BQ connections mandatory or by the release somehow dropping the value that is already set. If you check your BQ connection in Admin (I believe this i...

+1. I’ve also used this approach (invalidate cache via API, hit run_once API endpoint to trigger PDT rebuilds etc.) in the past and it works reasonably, although it is a bit clunky.

+1. Have wanted to be able to extend i__looker and System Activity models since forever.

Hi @shankarr, If your main aim is to affect the values that a user can filter by then I’d use these options: For scenario 1 I’d use suggest dimension: https://docs.looker.com/reference/field-params/suggest_dimension For scenario 2 I’d use suggestions...