lost coordinate of .tif image when edit by pscs6

Too bad, you’ll need to look at other software then. Please let the forum know if you have success.

I don’t know why the geotif data is not being picked up, it is in your updated file so we can probably rule out user error in updating the metadata.

I doubt that the following file will work, but give it a go and report back (I have removed the xmp and photoshop metadata entries which were not in the original file that worked):

https://www.dropbox.com/s/qr1ulr1le8qtyr7/After-xmp-photoshop.tif?dl=0

Can you post a link so that I can check the ExifTool processed image?

I personally would use ExifTool, however there may be other options out there that you may prefer… I’d recommend a Google search.

Test on a single duplicate image or remove the  -overwrite_original  argument if you are not working on duplicates or have no backups.

Using your sample files as an example, to copy all of the original metadata to the edited file you would use the following command line code:

exiftool -overwrite_original -TagsFromFile Before.tif After.tif

However in practice you will likely need to specify a full path to the images unless you are going to use the CLI to navigate to the working directory:

exiftool -overwrite_original -TagsFromFile '/Users/<username>/Desktop/Before.tif' '/Users/<username>/Desktop/After.tif'

Note: Windows users would need to use double straight quote marks to enclose a file or directory path name rather than single straight quotes.

This is just an introduction, there are refinements that could be made – for example depending on how many images you need to process you may need to update in batches.

Yes, Photoshop is stripping the metadata, ExifTool reports that the following tags are removed even in CC2018:

[GeoTiff]  GeoTiffVersion        : 1.1.0

[GeoTiff]  GTModelType           : Projected

[GeoTiff]  GeographicType        : WGS 84

[GeoTiff]  ProjectedCSType       : User Defined

[GeoTiff]  ProjCoordTrans        : Transverse Mercator

[GeoTiff]  ProjLinearUnits       : Linear Meter

[GeoTiff]  ProjNatOriginLong     : 106

[GeoTiff]  ProjNatOriginLat      : 0

[GeoTiff]  ProjFalseEasting      : 500000

[GeoTiff]  ProjFalseNorthing     : 0

[GeoTiff]  ProjScaleAtNatOrigin  : 0.9996

There are various tools which can copy GPS metadata from original files or otherwise enter some of this data into the files saved from Photoshop.