It seems I have on occations had the same problem as you.
Object do not report as missing but still show up in the model as red dots.
See the attached image.
Some of the elevation height objects show and other instances of exactly the same object don't (in the same elevation).
Other objects show fine in some views and not other views.
When I select one of the dots it says it is an object but it has no name and hence no parameters.
I am assuming it has something to do with these plans (has happened in more than one) being created in older versions of Archicad and then opened in 12.
But if is a problem with the object then I would assume that none of them would display.
And as you have noted placing a new instance of the object seems to work fine.
I have sent an archived file off to GS Australia but have not heard back about it yet.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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