Thank you for your message. Could you mind tell me which type of import that you are talking about? Importing VP-UML project as a SDE which didn’t have any UML project created before or import the VP-UML project into an existing SDE project?
For import the VP-UML project into the SDE which didn’t have UML project created, you can right click on the project and select SDE-VS Project > Import SDE-VS Project.
For importing VP-UML project into your existing UML project, you can try the File > Import > UML Model.
If you have any further questions, please feel free to contact us again.