To answer your second question first, tags with point source R are serviced by PI Random Simulator. Please find the documentation in C:\Program Files\PIPC\Interfaces\Random\PI_Random.doc
Tag H2043_FG4560 exist in my VLE but ACCN:TEST1 does not. Hence I conclude that you've created a copy of H2043_FG4560 and named it H2043_FG4560. I usually would agree that 2 points with identical configuration should receive the same data but in this case data is random data as indicated by the sources (PI Random Simulator) name.