Pruning not really necessary, except to cut out some old stems to ground level in the centre when its dormant to encourage new growth in the middle. 6 foot's pretty big for a shrub to be dug up and moved, if that's what you mean, you'd need to get a pretty good rootball on it, and it shouldn't be done now. Probably best left till late October, when the ground is moist, or even later, when the leaves have fallen and its dormant over winter.

thanks for the quick response!
I was thinking more of shaping it - cutting off some of the new growth - but was told I wouldn't get so many flowers in the winter.

That's true - cut immediately after flowering if you want to reshape, but if you're moving the shrub, you probably won't get flowers next year anyway from the shock, and it might actually be better to cut of half the topgrowth when you do move it and sacrifice next year's flowers.

Thanks very much for that.