Since the early 1970s, it has been recognized that some movements can cross clause-boundaries with COMP as an escape hatch but others cannot. These two types of movement were called A(rgument)- and A’-movements, which have been established in generative grammar since the early 1980s. Deeply related with this distinction is the ban on improper movement, which means the combination of the two movement types. The only exception to the improper movement is where the entire movement occurs from an A-position ends in an A’-position, i.e. where A-movement feeds A’-movement. Since Chomsky (2008) proposed the parallel movement hypothesis, a route has been opened to dissociating A- and A’-movements. Then, we need not allow A-movement to feed A’-movement. Is what we need not do what we should not do? To answer this question, this paper shows that though separate, A-movement is still able to manifest its effects over A’movement.