JabRef version

Latest development branch build (please note build date below)

Operating system

Windows

Details on version and operating system

Windows 10 21H1

Checked with the latest development build

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

JabRef 5.4--2021-11-15--9955a33
Windows 10 10.0 amd64
Java 16.0.2
JavaFX 17.0.1+1

Writing XMP metadata to pdf(s) skips my linked pdf file

How to reproduce:

1. Have a pdf file with linked XMP metadata

2. drag this file into Jabref (a entry emerges; Let's call it X)

3. Have another entry (let's call it Y) in another library that also links to this same file

4. Write metadata from Y to pdf via the following feature:
   

5. Try to write metadata from X to pdf via the F6 feature.

As soon as you use Writing XMP metadata to PDFs (F6) feature the following message pops up, even though my file is linked:

Appendix

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