Hi. I'm struggling to see who is being unreasonable here. My boss went on maternity leave for 6 months and has now returned. I stepped into her role while she was away and have now returned to my old role. It's an admin/ co-ordination role without going into too much detail. While she was away I made some changes which made everything run more smoothly. She has now returned and after trying the changes for a while she is returning to how she did it before. I am finding it very frustrating as I know the other way was better. I approached our boss but he just said that I'd done a good job and my colleague would keep any changes if they were worth keeping. Hes not really been any help. I'm so frustrated but I don't know what to do!