I think you are saying something like this happens:
You do a Paste Special with conditions like "Replace" and 8 repetitions. Then, the next time you Paste, it does a Replace with 8 repetitions. In other words, your last Paste Special conditions become the default until the next time your reboot Sonnar.
Sonar/Cakewalk has done this for as long as I can remember. It can be a convenience or an annoyance, depending on your workflow and preference. I am used to it and use it to my advantage, but I understand your point.
If it did not work this way, there would still have to be default Paste settings but they would always be the same.