Quick Export to PNG Loses All Original Metadata

[RLBoston]

This issue is back. Quick export to PNG loses all data from original ARW file. 

[D Fosse]

I don't know what specific metadata you are referrng to, but the whole point of Export is to strip the file down to essentials to reduce file size. Metadata are supposed to be removed.

[RLBoston]

Hardly. You miss the point entirely. I found the answer as simply not using PNG.
Despite what you've attempted to assert, saving a copy as a jpg, another lossy compression file type, retains all the original image information. PNG is not suitable for my workflow. 

[D Fosse]

@RLBoston 

You're missing the distinction between Export and Save A Copy.

• The "Export" function is exclusively intended for web/screen/mobile devices, where file size needs to be cut to the bare minimum, stripping everything non-essential.
• "Save A Copy" is a regular save operation, retaining all file properties as far as possible. It has just been split out from "Save" to be able to save documents with properties that are not supported in the target file format. To do that, you need to save out a simplified copy with those properties removed.

Save For Web is old legacy code, still kept around because Export isn't quite finished yet. But eventually it will be phased out, or that's the intention anyway. Save For Web does contain an option to preserve metadata, which Export doesn't.

[RLBoston]

The POINT was retaining all the metadate if you are going to comment on my question. You might review all the options under export to ensure that's a valid statement. 

[Per Berntsen · Accepted solution]

If you want to keep all metadata in the PNG, use Export > Save for Web, with Metadata set to All.

Alternatively, use Save As / Save a copy, which will also keep all metadata.

[RLBoston]

Thank you. Keeping this for future work.