Thank you very much Emilio!!
Your answer makes a lot of sense!! I've been bumping my head against the wall, trying to find a parent-child relationship between the Inventory Count Line and the Counters so I could report each one's count, but I couldn't find anything, not in the SDK documentation, and not in the code either. This other approach is actually easier to work with, both for automation and reporting.
Thanks again!!!!
Manuel