I agree with marialittlebzz, we moved a load of shrubs back in Feb when the ground was quite wet, i cut them back and moved them, they have all come back but at this time of year they are producing leaf ready to start flowering.

I would do both cut back the main plant, so its not using all its energy and take cuttings.
You will need to water copiously every day and keep in the shade. If it takes to its new home, great success.
If not you have the cuttings to fall back on.

Good Luck and let us know how it goes.