In Bentley Navigator if OpenPlant Modeler document which is in dgn format can be viewed and markup can be created eventually gets saved in .overlay.dgn format. In this wiki all the markups created in .overlay.dgn in Navigator can be viewed and rectified in OpenPlant Modeler CE.
Search Paths : Displays the directory path in which to search for the markup sheet files. Drop-down menu offers the options:
Configured Path (MS_MARKUPPATH) — Use the configuration variable MS_MARKUPPATH to set the directory path.
Configured Path (MS_MARKUPPATH) + Selected Paths — Set the MS_MARKUPPATH configuration variable as well as select multiple local locations in which to search for markups.
Selected Paths — Select multiple local locations in which to search for markups. Browse for Markups : Available when Markups Search Path is set to either Configured Path (MS_MARKUPPATH) + Selected Paths or Selected Paths) Opens the Browse For Folder dialog which prompts you to select the directory in which to search for the markups.
Markup toolbox contains a tool to open the Markups dialog. Open the Markups dialog, which is used to view the markups stored in a model. All tools in a toolbox are not always visible by default. To see all tools, right-click in the toolbox and select Show All from the menu
If above problem still persists, then please create a Service Request and contact the Bentley Product Advantage group. Please include a list of all relevant details to get in depth analysis for a solution or workaround