Steps to Reproduce

-Add ezkeywords attribute to Article content type
-Create one article with name "Article1" and ezkeyword fields "111". publish. This will create version1
-Edit the created article and update name to "Article2" and ezkeyword field to "222". Publish. This will create version2
-Go to "versions" tab of the article, and create a new draft based on verison1 (the one that has "111" as ezkeyword)
-When we edit this new draft, we see that the article name is respected accordingly to the chosen version (Article1), but the ezkeywords is not. We have "222", that is related to version2 and not the chosen version (should be "111)