You can use DITA2Trisoft to import content into SDL LiveContent Architect. The application runs in two phases: Conversion and import.
Conversion phase During the conversion phase, the following operations take place: validation of DITA content against the SDL LiveContent Architect DTDs; GUID generation; SDL LiveContent Architect condition generation; and creation of the filemap.xml file.
Import phase During the import phase, the DITA content is imported into SDL LiveContent Architect. The filemap.xml file specifies the metadata that is created in the repository.