I am moving some already placed hubs. I can select all of them but the ones that are placed on top of an object, or touching one. Has anyone had this problem? Do I need to start over on the planning?

You can hide and or make an object inactive, so you can get to whatever is you are trying to get to. It is in the object side bar. Just don't forget to unhide them (although I think it only affects ZE and not the output that gets munged)