[FixedOn66]

I'm having the same problem and the suggested post doesn't help. Here's how I come across the problem.

I have two main perspectives; Work and Home. Both are Context views. I often like to work on project planning by selecting one of the items in these context perspectives and choosing Show in Planning Mode in the View menu. (BTW, why does it sometimes say Show in Context Mode when I'm already in context mode?)

The resulting planning mode view has no columns for Start, Due, or Estimate... not very helpful for planning.

I've gone through the "set default view" process described above. I've looked through the com.omnigroup.OmniFocus.plist and find column display defaults for context mode but not planning mode.