You would also want to ensure that the Adobe LiveCycle Form Bridge is not on the form.
Here are some scenarios, from the Workbench help, which may help:
If your process uses Adobe XML forms (XDP files), you can render the form to PDF and then use the Inject Form Bridge operation. To render to PDF, you use the renderPDFForm operation that the Forms service provides.
Workspace ES provides a Complete button that users click to submit their forms. However, forms can also include submit buttons. When the Inject Form Bridge operation is used on a form, Workspace ES either hides the submit button, or disables the Complete button.
Form design
Result
Design: The form includes no submit button.
Result: Workspace ES disables the Complete button and users cannot submit the form.
Design: The form includes one submit button.
Result? Workspace ES hides the submit button and enables the Workspace ES Complete button.
Design: The form includes a button (indirect submit) that points to a submit button (direct submit)
Indirect-submit buttons always take precedence over direct-submit buttons, even if multiple submit buttons exist. Workspace ES always shows the indirect submit buttons.
Result: Workspace ES hides the submit button and enables the Workspace ES Complete button.
Design: The form includes multiple indirect-submit buttons that point to one or more direct-submit buttons.
Results: Workspace ES disables the Workspace ES Complete button. The user must click the appropriate button on the form to submit it.
The user can still save a draft version of the form or take the form offline
Design: The form includes either an indirect- or direct-submit button in a repeating subform.
Result: Workspace ES excludes these buttons for submitting the form in Workspace ES.
Note: When the submit button that was added to the form design with the Process Fields form object to the form design is hidden, the button still provides the functionality for submitting the form.
Submit requests are handled by Workspace ES, which acts as an intermediary between the LiveCycle ES server and the form. Also, forms can be used both offline and online.
Hope that helps.