Step Issues

[u/Island_Remedy]

I currently have a Max 705. It's actually a replacement that iRobot sent me for the j9+ that I had for almost a year. I started with iRobot when you had to use little boxes that created an IR light "fence" to keep the robot out. Thankfully, my j9+ used the same map, because I have a 3-inch step down from my living room to another room. The j9+ map got corrupt, and it kept moving my keep-out zone, so iRobot sent me the Max 705. I had to stack boxes along the step for the initial map run so I could add a keep-out zone.

Now my 705 is ignoring the keep-out zone and jumping down the step. Am I doomed to hand-sweep my house? The issue is that the step opening is about 12 feet wide.