My CRUD dashboard is only C’ing via /r/Splunk

I'm trying to follow the Hurricane Labs CRUD dashboard tutorial (part 1 & part 2) to launch-off into Javascript land and make an interactive, user-editable lookup table.

Have my KV store collection setup with the required fields (and a spare field, as I'm actually trying to adapt this into a different purpose).

And have copypastad the xml, css, and js over to my dev Splunk instance.

However, regardless of whether I click the "update" or "delete" or just enter new data into the entry form, when I click "submit", a new entry is being added instead of one of the other two actions.

Who here has worked with this, and are their any gotchas when trying to mimic this dashboard?