I am attempting to create a Parent/Child relationship between two lists in SP 2013 as described in this post:
I have done this numerous times in previous versions with no problems. However in 2013 I have not been able to get this to work. I have tried various versions, code I know works from 2010, jQuery code (as described in the article) and a few other things. The web connection between the web parts works fine, the issues arrives when I go to the newform.aspx file on the child list, I am unable to set the relational key. The pull down will not change to the value of the query string no matter what I try.
If anyone has a surefire way to do this in 2013 it would be greatly appreciated. If you have other information that might help, please let me know.