Problem: Label changed to Record Number


I’m working with Endnote X8 and I would like to use my references as BibTex in my Rmarkdown document.

So I downloaded the output style ‘BibTeX Export using EN Label Field.ens’ which I thought would create labels for me. But it didn’t, so I started giving my references labels (Author+Year) on my own.

The BibteX Preview in Endnote looked like I wanted it to be.

So I exportet the references as .txt and changed it to .bib.

But as I opened the .bib my labels were removed and there were record numbers instead.

Can somebody please tell my why this happened and what I can do to keep my labels and not get the Record numbers?

Thanks a lot!