What is "360 Real Estate Analytics"?
How did you set up your matching fields for the the update? (A screen not of the field mapping dialog would show a number of critical details).
From the lack of results, it would seem likely that no records from your source file match to any records in your found set--so a look at what matching fields have been selected might reveal why that is the case.
Sorry about that, not sure why the third image didn't upload - here's a screen shot of the import mapping.
360 Real Estate Analytics is just the name of the database. I have a test record that I created which I know matches the zip and the street name of a subdivision in my subdivision table.
That all looks correct to me in terms of import details.
But one rather insidious issue comes to mind: Is the target table occurrence named as your target table the same target table occurrence as that for the layout where you performed your find for records where this field is empty? In otherwords, when you open layout setup on the layout where you or your script performed this find, do you see the exact text "Permit Data" in "show records from"?
And was this find performed in the same window that you are now using for your import.
If you have two layouts based on different occurrences of the same table or if you perform a find in a different window, you end up with two found sets that are independent of each other.