Something does not sound right here…
It was my understanding that if the ‘Send Values’ option is not checked in PAC Control for that analog point then nothing is sent and so whats on the I/O unit stays put when you do a strategy download…
Your saying that’s not the case? You are seeing the offset and gain get reset to zero on every strategy download?
Have you saved the I/O config to flash via PAC Manager?
The very end of this thread is how I have handed this sort of thing in the past (to be clear, that post talks about PID config on the I/O rack, but it should be the same as the gain and offset).
Skip down to the last two screenshots and read around them.