I have solved all the clues and found the hidden phrase, but cannot see how it "identifies clues". Nor is it clear from the preamble, whether the phrase "identifies" the given clues or the missing ones. The missing clues' numbers would have been 1, 10, 11, 12, 14, 30 and 42 (I think), but I cannot see any significance in that. No idea where to go from here.