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check for existing values in p.union value arrays
				if trackArrays[k] then
					local array = ret[k]
					local valExists					for _, arrayVal in ipairs(array) do						if arrayVal == v then							valExists = true						end					end					if not valExists then						array[#array + 1] = v											ret[k] = array					end
				else
					ret[k] = {ret[k], v}