Hello, I have also seen the gray lines in L2 and I managed to get rid off of them at a point and therefore compute a L1+L2 baseline. I didn’t use data from RS2 but from ZED-F9P which is actually what is inside RS2 (I think so…). Let me ask you if you also import in Infinity the navigation file?
In any case, is it possible for you to share the raw data?
I also tried to convert to 3.03 format. I still cannot get an L2 solution. In my case I just deselected the Galileo system and it worked. Not perfectly though, because it left out some parts of the data. I will continue to investigate and will come back to you, as this topic is also very interesting for me and the solution also useful to me.