See the difference is I looked at this and researched before doing stuff instantly...

Note:
1. Red Square Area, says you need the same plan.
2. Note the steps above show you do quests AFTER (you show the bracelets.)
3. If the bracelets dictate the quest... this means your items are tied to the quest.
4. If your quest is the "downgraded" version you would get the down graded items.

Fix: (Which SE should do anyways because I want multiple HQ dresses to dye/vanity metallic purchased colors)
1. Just make the platinum/gold items purchasable via CALAMITY SALVAGER if your character was flagged as purchasing the plan AND you have completed the quest.

I think a bigger glaring issue is... if you toss the dress you can't get it back from the calamity savager.