Restarting after several years lapse

I'm significantly heavier now than when I used My Fitness Pal years ago. I've made good progress in the last 11 days, but the app is comparing todays stats with those of 4 years ago, which is a downer, since it's showing a gain instead of a loss. My current start date is corrected in my profile, but the progress scale doesn't consider it. How do I change that. Also, the type of foods and names of recipes has changed and therefore confuses my current use of "current" or "latest" entries.