Refer to this thread: https://www.photools.com/community/index.php?topic=2907.0
When one rotates an image using the Orientation (ExifTool) the pending metadata write-back for the file is cleared (if it has it) opening up a possibility of data loss.
Suggest one of the following features:
1. Don't clear metadata write-back for the image if these features are used since the command only deals with the orientation field.
2. Process the pending metadata write-back for all the data not just the orientation.
3. Provide a warning if there is pending metadata writeback (even if it is a one time warning).
4. At the very least, provide information in the help topic that this will happen.
I would prefer to see 1 or 2, but in the absence of those two, 3 and 4 should definitely be implemented together.