miss my "Infernal Throne"

Hey there!

When a temporary league merges into a permanent league, this migration also includes your hideout and masters. If you already have a hideout, then whichever one has more decorations in use will be the one you keep; all the decorations in the one that isn't going to be used are swept into your hideout decoration tabs for safe-keeping :)

I've taken a look into this for you, and your Prophecy and Perandus trophies and Infernal Throne are all in your Standard hideout decoration tab.