Missing objects from old Blender in 2.8 (hidden in 2.79b and lost in 2.8) I am missing a bunch of objects when opening some old blender files (it has nothing to do with the collection visibility like in this post: Missing objects when opening old file in blender 2.8) 

I just installed the 2.79b on another system to doublecheck the problem... and I can access all files in the old blender version - but I realized that the problematic objects were hidden in the old file.... So I made them visible and - guess what - they showed up in 2.8! 

Funny thing is that 2.8 shows these objects as "visible" but greyed out... 

I can share the .blend file but am not sure how this is normally done within stackexchange...  

Appending the missing objects to the current file results in the same problem - the objects show up as "visible" but are greyed out - and cannot be found somewhere in the viewport...

This is rather frustrating because I have lots of old blender files where the visibility of objects is a thing of organizing my stuff ( I use blender only for modeling 3d printed stuff)... And blender 2.79b and 2.8 cannot co-exist as far as I know...  

Any ideas?
Ok.. yeah... something new... thx @rjg to pointing into the right direction...

The restriction toggle let's me enable or disable single objects from the viewport - which has nothing to do with the objects visibility! 

Turing the restriction thing on I was able to enable the object in the viewport: 


I find it rather confusing that hidden objects (=visibilty!) in 2.79b become disabled (and NOT hidden) by opening in 2.8.  I would expect that a hidden object in 2.79 will be hidden in 2.8 and not disabled... 

But great - something important learned about the switch from 2.7 to 2.8...