This paper discusses and challenges the apparent violation of the Merchant Preposition Stranding Generalization (PSG) of 2001. As initiating with the description of the non-prepositive stranding language sluicing in Iraqi Arabic, optional tends to show in stranding and pied-piping a preposition. The study addresses an account arguing that Iraqi Arabic sluicing only derived from a cleft source under preposition stranded (p stranding). Therefore, pseudosluicing is an instance given its presence as sluicing.The evident P-stranding violation is that the wh-pivots of clefts cannot be contributed significantly by a preposition in Iraqi Arabic. Therefore, in the face of initial appearances, the Iraqi Arabic is not a counter-example of the generalisation of the merchant. In addition, two separate sources in Iraqi Arabic of IP ellipse are proposed: sluicing and pseudosluicing, both of which generated by wh-movement plus IP deletion. On the basis of both these sluicing-related evidence, updated evidence for the study of Arabic Class II interrogatives as copular clauses are given.