Problem importing nodes

[Trying_to_learn]

Sorry folks, something weird is happening.

(Overview)
ALL systems NR 4.0.9
node.js is either 20 or 18
npm 10.8.2

Here's the John Dory in pictures.
(words below)

I'm exporting this function node.
Note node number.

This is the machine into which I want to IMPORT it.
Pointing to node.
Note node-number. Same.

Paste code and press import
(I didn't post a picture of one option, but given I pick the correct one.)

I'm expecting to have the option to replace/overwrite the existing node.
But it isn't being shown.

[GogoVega]

This doesn't yet exist for an individual node.

It can replace a config node or a subflow only.