Yangman - Form URL - edited data in Json URL changed to original when switched to form

When editing data in json and then switching back to form, the data inserted in json URL are changed to previously inserted data.
1. Refresh the page. Navigate to network-topology rev. module > config tab > expand network-topology branch > click topology

branch > click node

branch.
2. Switch view to form.
3. Select PUT operation and insert t1 as topology id and n1 as node id.
4. Switch to json view. There are data displayed in Sent data CM.
5. Edit data in Sent data CM, change "n1" to "n2".
6. Switch to form view. The changed data "n2" are displayed in form.
BUGGY BEH: Node id is not filled in form URL. The data from form should be filled to URL.