In some dgn files, it is found that certain elements disappear in a promoted view. This issue can occur if the elements exist in a model that can be placed as a cell. In a dgn file that includes many reference files, this issue may arise more often, and it can be difficult to locate the reference file where that missing element exists. Following is the workflow by which these missing elements can be made visible in a promoted view.
Go to ‘Demote view’ and right-click on the Slab which is missing in the promoted view.
From the pop-up menu select “Exchange” which will display the available reference files. From those files select the one where the slab exists.
After accepting the selection the reference file will open.
Click on the ‘Models’ icon:
In the Models, dialogue removes the tick from the ‘Is Cell’ check box. (Note: In most cases, you will not want the ‘Is Cell’ check box selected).
From the Ribbon’s Quick Access toolbar click on the ‘Save Settings’ icon and then click on the ‘Back” button:
This will bring you back to the previous dgn file. From the View Attributes dialogue click on the ‘Promote View’ button and note that the missing Slab is now visible.