When a putaway rule is being invoked ?

I received an item through an LPN and when i try to Putaway the LPN, the Putaway Rule is being called. I have designed a Put away rule which will suggest the Destination subinventory based on item Category. Below is the condition for selecting Subinventory : DECODE (Item_Category, 'Aviation', 'RMAVIATION', 'Product', 'RM-PRODUCT',  ' ' ). so for the FIRST time when i try to Putaway the item with category "Aviation", then subinventory "RMAVIATION" is being properly suggested by Putaway Rule,    But i did not putaway the item. Now i changed the item category to "Product", so as per logic "RM-PRODUCT" subinventory should be suggested by the engine while putaway but engine is still suggesting "RMAVIATION" only.  And one more thing when we create a putaway rule a package in backend gets created with name