I may be mis-remembering but, I thought there was a quote from Browning somewhere that stated something to the effect that he lamented how Universal had "butchered" DRACULA prior to it's release to theaters. 

Granted, even that is no concrete evidence that Browning would have edited it precisely as the shooting script calls for...  Nonetheless, Clark's re-edit of the film was originally done as an experiment to see if matching the editing used in the Spanish Language version of the film would make a significant difference in the way the Lugosi film plays.  And, it does!  The Lugosi version is presented in a significantly more comprehensible manner and even seems more interesting and less stage-bound!  It was only after Clark made the initial re-edit that he discovered that his cut of the film followed what was presented in the approved Shooting Script!

Is that what Browning had in mind?  Is this how he would have edited it himself?  'Hard to say...  but - considering that Browning wasn't a novice but, rather an esteemed director - it seems a lot more likely than the jumbled mess that was released to theaters! 
Regardless of whether Browning would have or wouldn't have, Clark's experimental re-cut "restores" the Lugosi version of DRACULA to the Approved Shooting Script's standards.  But, more importantly than that, it succeeds entirely on it's own merits
- GJS