skuid popups passing parameters incorrectly

My organization is trying to upgrade from Skuid 8 to 11. Our only obstacle is a page that doesn’t work properly in 11. It includes a popup with a page include. The popup is used both to create new records and to edit existing records. When we use it to create new records in Skuid 11, the records (Salesforce Accounts) are created without their parent ID. Through the browser console, I’ve found that the popup URL in Skuid 8 looks like this:

https://skuid.cs30.visual.force.com/apex/include?type=Branch&parentid=001o000000b7KnbAAE&isi...
In Skuid 11, the URL looks like this:

https://skuid.cs47.visual.force.com/apex/include?type=Branch&parentid=001o000000b7KnbAAE&...

Note that in the Skuid 11 URL, the "parentid" query string variable is preceded by "&" rather than "&", which means that there is not a "parentid" parameter available to Skuid to populate this field. How can I fix this?