@Jambo I was told by Westcoastperson on the park's news thread that they were sent to the zoo to be exhibited in their upcoming Children's Zoo. I do not know what the plans are for the enclosure now but I would assume another smaller mammal species will be moved here in replacement.
@Jambo As animalsareamazing said the coati were most likely moved to the Main Zoo to be included in the childrens zoo. Plans currently call for them to be mixed with Patagonian Cavy in the temperate forest in the exhibit just behind the finished squirrel monkey exhibit next to the large play area. We know the exhibits for this area are finished and ready for animals so we can assume they left a few weeks ago for quarantine to get them on exhibit before the childrens zoo opens.
What will be replacing them? Any semi arboreal species not being used in the childrens zoo will most likely replace them. We could see animals like marmosets which have already stayed in the exhibit in the past come back. The good thing is whatever animal they put in it should be an animal previously off exhibit and not an animal taken off exhibit and moved from either the Safari park or the zoo.