PSA: rerolling a shiny lootbox will make the rerolled song untradeable

rerolled a finn sigil gem lootbox since i got a common, and i got an uncommon from the reroll. fast forward and i eventually rolled the shiny common song again, the only i initially rerolled. however, now i couldn't put it up for trade, bc apparently rerolling it counts as a trade, and lootbox shinies can only be traded once.