References and keywords disappear

I resolved this… was my configuration
Hello, I have a problem when I visualize my articles before the migracoin I can see their references, how to implement the use of covers when adding the cover to this article and save my metadata my references disappear and I can not find them.
My question is where can I edit the metadata of an article such as references, keywords?

After
image

Before
image

Use this solution:
https://github.com/pkp/pkp-lib/commit/b16da002a13adcb948ea59141423b30961a1acee
Peter