Wittaj - I do have a 49225 with the autotracking firmware 0312 version. I have found if I create a shortcut of Iexplorer and then run it with Start InPrivate Browsing it works perfectly fine and saves all my changes properly. This is in Windows 10 Home. I have several older Windows 7 machines, and have more problems using IE 11 on these, than I do with the Win10 version of IE.
But you are still using Internet Explorer....my comment was to Reimo that said Edge Browser with IE mode works for every camera....which is does not for the 49225.