Hi Francois,
it is not within the described pipeline. That works fine.
However, the pre-processed data are in a fieldtrip structure, which brainstorm seems to allow me to import. But then the channel information is completely messed up. The data I have been looking into are 100307_MEG_3-Restin_rmegpreproc. So could this be a problem with the import of fieldtrip data structures? If it helps I can also point you to the data located in Montreal.
Best wishes,
Esther