A travel day with no journeys – still a travel day?

I gather (from the angels that hover over this forum) that it’s best to wait until just before boarding each train to activate that journey.

As AnnaB, for example, put it in a reply on this forum last year:

The advice from the experienced travellers in the community is also never to activate a travel day, that is connect a journey to your pass and create the ticket (QR code), until just before boarding the train, otherwise you might lose a travel day if your travel plans change at a late stage.

So i’ve activated my pass; all 10 travel days are listed. I linked the journeys to them and then unlinked them again. The travel days are therefore “empty” in that they are waiting for me to reattach the journeys in “My Trip”, but they still exist. In “My Pass” under “Travel days” it says “10/10 used”. (I can cancel them and i can still deactivate the pass, so no probs there).

However, this is where i’m (characteristically) confused:

I’d like to leave those 10 empty travel days as they are, and add journeys at the last moment by yellow-toggling them. But what happens if i miss the train on, say, Travel Day 7? The travel day is “empty” – there is no journey connected to it, but at the same time it is still listed as a travel day, with its date.

Can i be 100% sure it won’t be lost, so long as no journey is connected to it?

And what happens then? Does Travel Day 7 just disappear from the list, leaving me with a total of 9 travel days “used”, and the possibility of scheduling another one?

Any guidance hugely appreciated.

Badger