it may not bloom if the shrub is trimmed off, but after being moved it really isn't going to bloom well anyway. Rule of thumb is to trim as much off the tops as the roots you loose- so that ratio is somewhat balanced. It will help them recover. If you absolutely HAVE to move them now, you can also stake some cardboard up around them to provide some shelter from the sun for a couple of months, you can also tape on some aluminum foil to help deflect the heat. Water them in the evening so they have all night to soak up and be cool. My experience w morning watering is that the sun comes out shortly and dries it right up.
