Ok, then I guess my post was quite confusing... Sorry for that.

You probably captured the signals in "raw" mode. This is only in rare occurrences a sensible thing to do. All physical measurements, not only the capturing of IR signals, are associated with measurement errors. This is unavoidable, and a fact of life.

Instead, you should (normally) capture in "parametric" mode. Then IrScrutinizer identifies the signals as belonging to a certain protocol (here NEC1), and replaces them with the computed, mathematically exact representation. Using these instead of the measured ones leads to a more reliable and robust system. We have thus eliminated the measurement errors. If you need for example the Pronto Hex, it can be generated during export. And there will be no "0015".