| Scenario | 
		Old | 
		New | 
    Results in IM29 | 
	
	
		If you recode MODELA to MODELB, you need to delete MODELB in IM29, enter the recode parameters in RM81 and then run RM82. 
			MODELA will cease to exist; history for MODELA and MODELB will be merged and reported under MODELB; the components of MODELA will become the components of MODELB in IM29. | 
		MODELA 
			 COMP1 
			 COMP2 | 
		MODELB 
			 COMP3 
			 COMP4 | 
    MODELB 
    	 COMP1 
    	 COMP2 | 
	
	
		| If you want to recode MODELA to MODELB, but retain the components of MODELB, then you need to do a multi-step procedure: | 
	
	
		| Recode MODELB to a temporary product code. RM82 only does a recode. MODELB is now gone; history and IM29 are under MODELTEMP. | 
		MODELB 
			 COMP3 
			 COMP4 | 
		MODELTEMP 
			(does not exist 
			in IM13) | 
    MODELTEMP 
    	 COMP3 
    	 COMP4 | 
	
	
		| Recode MODELA to MODELB. RM82 only does a recode. MODELA is now gone; MODELA's history and IM29 are under MODELB. | 
		MODELA 
			 COMP1 
			 COMP2 | 
		MODELB 
			(does not exist 
			in IM13) | 
    MODELB 
    	 COMP1 
    	 COMP2 | 
	
	
		| Delete model definition for MODELB in IM29. | 
	
	
		| Recode MODELTEMP to MODELB. RM82 does a recode/merge of history. MODELTEMP is now gone; original history and IM29 from MODELB --> MODELTEMP are now back to MODELB along with history from original MODELA. | 
		MODELTEMP 
			 COMP3 
			 COMP4 
			(history and components of original MODELB) | 
		MODELB 
			(exist in IM13 
			but not in IM29) 
			(history and components of original MODELA) | 
    MODELB 
    	 COMP3 
    	 COMP4 
    	(history of A&B; components of original MODELB) | 
	
	
		| Double check product description of MODELB in IM13; expect it to be the description of original MODELA. |