In the past starting about 2008 there have been occasional articles suggesting that large amounts of dinar were stolen .. There were rumors of laxed security and accountability when initially distributed ...Then there was the dinar the GIs shipped home ... Also corruption in the customs allowed early dealers to simply ship it in luggage as dirty laundry .. Later there is the dinar that ISIS collected that may still be in their posession . The CBI knows it is missing but doesnt know how much . IF the dinar became freely traded this ghost dinar could swamp the iraqi economy.
I believe this was the motive for Dr Shabibi's RD plan. A well managed exchange that would make the present IQD worthless.
My 2 cents