Mine always die completely back. I'm not sure what kind I have but it blooms off of new growth. I hear that some types bloom on new growth and some off of last years growth.
If it were me, I would leave it and see if it blooms. If it only sends up leaves and limbs then I would probably invest in a type that blooms on new growth.
Sorry, that is all I know.
Maybe somebody smarter than me can answer this question.