Profiles and cross sections created in DWG mode are not recognized when the DWG is reopened.
This issue can be resolved with the addition of a MicroStation Configuration Variable:
MS_DWGSAVEAPPLICATIONDATA = 1
If this variable does not exist or if it is set to 0, profiles and cross sections created in DWG mode are not recognized when the DWG is reopened. Under MicroStation > Workspace > Configuration, create a variable called "MS_DWGSAVEAPPLICATIONDATA” and set the value for it to 1 before creating profiles or cross sections. Without this variable the product will not write the required data to the profile or the cross section graphics.