I see..Is there a way to completely undo my work so that I can go back and modify/update what was there before? Or do i have to go back and delete all the points

I noticed that. Here's the issue--i'm using gpx files from WV trail inventory--which is official WVdot info. I work with WV State Parks and need to update all our trails so that it syncs over to AllTrails. Should I just have edited what was already there? Because there are some errors in what is already showing. Thanks for any info you can give me--i'm still learning all this.