The truth is often found in a database. Here we are looking at Photos.sqlite to see how the data exists on the original device that took and adjusted the photo as well as the device that received the AirDrop. The query below was used to obtain quick information needed for our test.
select
zfilename,
ZLATITUDE,
ZLONGITUDE,
datetime(ZDATECREATED+978307200,'unixepoch','localtime') AS "Created Date",
datetime(ZADDEDDATE+978307200,'unixepoch','localtime') AS "Added Date",
datetime(ZANALYSISSTATEMODIFICATIONDATE+978307200,'unixepoch','localtime') AS "Modification Date"
from zasset
The Original device shows that the Latitude, Longitude and Created Date were updated to match the adjustment made by the user. The Receiving device shows the adjusted data and the date it was added to the device.
The original device that adjusted the photo is shown above and the adjusted image on the receiving device is shown below.
Ian Whiffin summarizes the relevant tables from Photos.sqlite and which are affected by the adjustments in his blog www.for585.com/adjusted. This table is shown below.