I've got two forms, after the first submits, it sends you to the second and should be putting a field dynamically in the URL of the second form's page.
That works -- except, the field in question on the first field is a selection field with values separate from labels. The label is sent instead of the real value. So on the other form, it's looking at that query variable in the field's advanced settings for the value. It sees the label, but doesn't pick up that the label matches the label.
What I think is happening is that the selection field is dynamically populating the URL for the second page with the label, but the form display function is looking for the 'value' portion. The second form's field in question is also a selection field with values separated from labels.