Dicentra spectabilis likes shade, nutrition, good soil and not being disturbed. I grow mine in my hellebore borders as I think they like same conditions. They make good companions too...as hellebores pass their peak the dicentras take over.
Bunny, one year is bit soon to decide what to do....dicentras have yet to show for this year. Yours may be good ths year.
However, if mine and it struggles again, I would dig it up carefully....it has fleshy spreading roots.....and replant in soil that has been enriched with mushroom compost, manure, garden compost. If very wet add some grit.
I have one growing too in the sun but soil is good, hearty and nutritious and it does just as well there.