Reviewing the information that you provided us I suppose that you are using our Add OpenAccess Service wizard for generating a Plain service and you want to move the DTO classes to other application independent of the OpenAccess assembly reference - your business layer.
The wizard code generation cannot be configured to separate the files in different projects but as it is using a one-time code generation the easiest way to achieve your needs is by manually moving the Transport.vb file to your business layer. This should be a safe operation because it is containing only your DTO classes without any dependencies of the OpenAccess assemblies.
Please bear in mind that you should add reference to System.Runtime.Serialization in the project where you move the Transport.vb file and to import the DTOs namespace in the Services.vb,
IEntitiesModelService.vb and Assemblers.vb files.
Regarding the Repositories.vb file it cannot be moved to your business layer because it is depending on the ObjectKey and the IUnitOfWork classes from the OpenAccess assembly.
You could find more information about the Plain Services in this documentation section.
I hope this is applicable for you. Do not hesitate to contact us back if you need any further assistance.
the Telerik team