HI Rodrigo,
QAMV is a table for Characteristics specification for Inspection processing, That means it will give you data related to Inspection plan/Task list/Inspection specifications assigned to an inspection Lot.
Now, In an inspection plan you can select only one inspection method for each MIC. (Even if you have assigned TWO inspection methods in QS23).
As per your ABAPer, certificate program fetches Inspection Method from QAMV, and here program gets only Old inspection method which is obvious.
I would suggest you to change program logic :
Fetch VERWMERKM- QAMV and use it as an input for QPMZ (VERWMERKM = MKMNR)
in QPMZ you will get both Inspection methods (PMETHODE).
Amol.