Mike,
Almost 4 years and nobody answered your question...
Yes, I would still acclimate them. The overall intensity maybe less but the spectrum is different and its possible that a particular wavelength maybe stronger. I start all my SPS on the bottom for about a week, so that they can adjust, regardless of what lighting conditions they came from.
But honestly, whatever you did 3 1/2 years ago must have worked because your tank looks great, so keep doing it.
It's interesting the threads you come across searching for some other information, and yes its a slow work day!
Take care,