We are in the process of moving from DOORS 9.7 as our RM tool of choice to Polarion. The HCL connector currently being offered results in a very tight coupling of the two tools, i.e., the tools are lock-stepped in their versions by the version of the HCL connector. I would like to explore the possibility of using the Datahub plugin. We currently use Datahub for our DOORS integration. Has anyone any experience of using Datahub with Polarion via the OSLC interface? What are the limitations?