Have Boosts changed on legacy packs?

[Darkroom]

On this months renewal of my legacy 1Gb Everything plan, the way of accumulating boosts has changed to the way they work on the new plans. Previously it showed the purchase of packs as 3 circles which filled in as each of the three packs were purchased but now just shows two circles and text below them saying I've hit my maximum of 6 free boosts and to enjoy my free 2Gb.

Expanding the Boosts+  button, I see this at the bottom of the list of boosts:
"Free Boosts

With our new range of pay as you go subscription plans, you'll get a 2GB Free Boost each time you buy two 30-day plans costing £10 or more each, up to a maximum of six Boosts.
If you're still on one of our older pay as you go plans, your current Free Boost options remain the same as when you purchased your plan."

[354-]

Once you reach the 3rd boost, the information graphic should change back to the one that you have described.

Unless they are overhauling all the legacy/newer bundles and boost allowances for early 2026?!

[Darkroom]

Why should the graphic change once it gets to 3 packs? It's only showing two blank circles now whereas previously it would show three blank circles at this stage. If I was on a new pack and had under 6 boosts, it would offer a boost of 2Gb after the second pack was purchased, on the old packs it would be 3 packs and a 512Mb (or 50 mins) boost offered.

It's not just the graphic that's changed, it's the text around it saying I've reached my maximum of 6 boosts which is only relevant to the new packs not the legacy packs which would mean I'm unable to get any more new boosts.