Hello Pierre,
I work with XnViewMP 1.8.0 on my windows system.
I saved a *.jpg image
- with some IPTC and also XMP tags
- as a *.jpg image encoded with JPEG-LI.
This worked properly, but a message was shown: storing this image all metadata will be lost.
I have seen that no metadata is lost.
The IPTC and XMP tags I entered to the source-image are still available in the JPEG-LI encoded copy.
For me this popup-message is confusing.
Best regards
herb
Save as and message: all metadata will be lost
Moderators: helmut, XnTriq, xnview, Dreamer
Re: Save as and message: all metadata will be lost

Pierre.
Re: Save as and message: all metadata will be lost
This problem is supposed to be fixed in XnView MP 1.8.1. Please check and confirm the bug fix here.
Pierre.