[WF] Write-back does not update IMatch version number correctly

[axel.hennig]

This bug report is related to this one.

When following the steps described there by Mario in post #13, i.e.:

• Import the attached image into IMatch (thanks to gheppell for sharing this image)
• List Metadata (state 1) of the file by using ExifTool Command Processor (ECP)
• Use TimeWiz to change the TimeZone of Date Created and Date Subject Created
• Write-back
• List Metadata (state 2)
• Change Rating
• Write-back
• List Metadata (state 3)

The three Metadata states are:

Metadata (at state 1):
[IFD0]          Software                        : photools.com IMatch 23.14.0.1 (Windows)
[XMP-tiff]      Software                        : photools.com IMatch 23.14.0.1 (Windows)
[XMP-xmp]       Creator Tool                    : photools.com IMatch 23.14.0.1 (Windows)

Metadata (at state 2):
[IFD0]          Software                        : photools.com IMatch 23.14.0.2 (Windows)
[XMP-tiff]      Software                        : photools.com IMatch 23.14.0.1 (Windows)
[XMP-xmp]       Creator Tool                    : photools.com IMatch 23.14.0.2 (Windows)

Metadata (at state 3):
[IFD0]          Software                        : photools.com IMatch 23.14.0.2 (Windows)
[XMP-tiff]      Software                        : photools.com IMatch 23.14.0.2 (Windows)
[XMP-xmp]       Creator Tool                    : photools.com IMatch 23.14.0.2 (Windows)

Now my question is: The ending of the IMatch version number starts with (Metadata state 1) 1-1-1. Then it gets 2-1-2 and finally it is 2-2-2. This does not seem to be correct. It should already be 2-2-2 after the first write-back.

[axel.hennig]

I've copied the comment/question by Tveloso from the other thread to have this separated:

Could it be that IMatch/ExifTool didn't actually touch anything in the [XMP-tiff] group during that first WriteBack?...(so the version stayed at ".1")?

Might be, but what is the problem in the first write-back in [XMP-tiff] group and why is it gone in the second write-back?

[axel.hennig]

Mario already suggested in the other thread to close this...

[Mario]

IMatch only ever writes XMP::Creator, the mapping to the XMP::TIFF tag and the native EXIF tag in IFD0 is done by ExifTool during the mapping process. And IMatch writes to XMP::Creator only when it is empty or when it contains a previous photools.com IMatch entry.

Maybe it's just one of those metadata mysteries. I don't think this is really important. I doubt many users will ever look at this tag and as long you know that the metadata was written by IMatch, it should be OK.

[axel.hennig]

Fine, I was just thinking it might be related to the "other problem", because there is a difference in write-back-1 and write-back-2.