I have a couple of conjugate heat transfer simulations run in 2014. Recently I switched to 2016 and I noticed that when I read a .fld file with the 2016 version, it shows different values. I used the compare tool to see the temperatures on a surface and I also had the old values read by 2014 in an excel file. I noticed that the temperatures were different by about 1-2%.
Why does this happen? The results files were not modified in any way after the switch other than the format change.