This conversation has been merged. Please reference the main conversation: Lightroom: 3.5RC DateTimeDigitized Loss
This doesn't appear to have been fixed. Metadata > Edit Capture Time always sets Date Time Digitized to the value set by Edit Capture Time.
Also, a subsequent Save Metadata To File writes an incorrect value for XMP:DateCreated.
Steps to reproduce.
1. Import this JPEG, which has the following metadata date fields:
2. Do Edit Capture Time to change to 1/1/1990 12:00:00, and observe that Date Time Digitized has changed:
3. Do Save Metadata to File and observe that XMP:DateCreated is not the same as EXIF:DateTimeOriginal: