Not be able to home correctly on mission planner

Dear community,

My problem is that I’m not able to home my rover with mission planner when I want a new mission. When I write my new mission to my rover and turn the rover on GPS I get the message “setting prev. WP” and then he takes another home point where he wants to drive to, and when I write my new mission and then read it again he opens the mission but with another home point where I can’t drive.

Does somebody know why he does this and what I can do about it?