how to find out what POI has been deleted since (911 motorola)

Question

Step 1.

over time, dispatch has asked for delete a bunch of POI. we need to know what they are. 

when get a new set of POI data, we still need delete these POI that dispatch has been asked for deletion in the past. 

load raw POI ( before dispatch delete )

Step 2.

3546 raw POI (before dispatch delete) - currrent 2335 (after dispatch delete) = 1215  POI ( has been deleted )

Step 3.

these result are poi has been deleted

https://transparentgov.net/json2tree/esri/geojson/dir.html?dir=.%2Fpoi&model=poi-google-hover

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