i sometimes create my horizontal alignment in Civil 3d and export it to xml which is then imported in MX for further design. Unfortunately on my current project, anytime i import the alignment, i realised that all the tabs becomes greyed out so i am unable to access my model or alignment tab. When i close and restart MX, i realise my model is empty and does not contain any alignments.
after some trouble shooting, i realised that if the alignment in civil 3d contains spiral curves, it greys out but if its just simple circular curves, i am able to access my alignments in the model. i believe it should be some settings of some sort in MX. any assistance will be most appreciated as i am on a tight schedule to finish the design.
Thanks