What happens to metadata in GIMP?

[Ofnuts]

Experimentally, see attached file. Two pictures, one from my phone, and one from my camera:

• source is the original photo (for the pone, transferred by accessing the phone as a mass media)
  
• shared (phone only) is the photo s exported when you use a "Share..." link (some privacy-invading data such as GPS are removed).
  
• edited-full is the picture edited in Gimp and exported with all metadata (EXIF+IPTC+XMP turned on)
  
• edited-censored is the same picture with no metadata (EXIF+IPTC+XMP turned off)
  

For all pictures, metadata extracted using ExifTool and then sorted to make comparison easier.