Catalog Item with Provisioning Request - Not Saving Properties

I'm using an XaaS request to take user input and replacing properties in a new provisioning request. The rough vRO workflow is as follows:

// catalogItem is a predefined blueprint

var request = vCACCAFERequestsHelper.getProvisioningRequestForCatalogItem(catalogItem);

var requestData = vCACCAFERequestsHelper.getProvisioningRequestData(request);

var jsonData = JSON.parse(requestData);

// ------ Do some processing of data here to the jsonData

// Send off the request

vCACCAFERequestsHelper.setProvisioningRequestData(request, JSON.stringify(jsonData));

result = System.getModule("com.vmware.library.vcaccafe.request").requestCatalogItemWithProvisioningRequest(catalogItem, request);

If I run this request as an admin user, then the request runs as expected and the properties are updated with the new data from this workflow.

If I run this same request as a regular user, the workflow runs successfully and the new VM is built but none of the properties are updated on the new VM.

I can output the jsonData and see that the value are in fact getting updated by vRO and sent over to the requestCatalogItemWithProvisioningRequest method.

System.log(JSON.stringify(jsonData));

Any ideas why I'm getting different behavior between different user types?