Hi Allan,
How was it working on 11.5. In 11.5 as well it gives different rowsets for each tag in the tag query.
On js however there is a way to modify json coming from query, iterate through the records and insert property value. In this way you can restrict the dates in json by filtering the records based on timestamp range.
data = [];
$.each(data, function (index) {
check date and set property for data[index]
});
Hope it helps.
Thanks,
Swaroop