I tried cupcakes dipped in heated/softened icing from a can then chilled them in the fridge before decorating them with BC flowers... stored the cupcakes in a carrier on my kitchen counter overnight and the next day all the frosting had melted off of them!! I thought the frosting should hold when returned to room temperature.... Any suggestions to prevent this from happening again??

maybe its just not designed to be softened, so it cant regain its texture. maybe something to do with the fridge?
you might be better finding something scratch, or you can buy pouring fondant, which sounds like the look you want.
xx

I too think it might be the canned fronsting

If you had the top on the carrier, that might have caused it to melt. The buttercream needs breathing room, not stifled room. Yes it happened to me!
Margaretg