How outdated is it? Minutes old?
Could be a minute old or more. The point I was trying to make is:
The filter action from the summary only causes the Details view to update (get latest data), whereas the summary contains the old data.
OK that is what I suspected. Have you tried setting up TWO filter actions? A second one going from source sheet back to source sheet? Or even on the same original filter action have it go back to the source (Summary) sheet. This way it should re-query the summary data as well and it should be up to date.
Thanks for the suggestion, I had not tried that before.
But it did not make any difference. The problem still persists.