The channel names in these EDF files include dots at the end, which is not usual and does not correspond to any standard. For example the first channel is named "Fc5." instead of "FC5" in the standard 10-10 naming convention. This is the only reason why Brainstorm does not find your channel names in its 10-10 template.
I don't think there is any harm in removing these dots from the channel names automatically, I have never seen them being used for any purpose. Therefore I updated the EDF reading function so that they get stripped from the channel names.
Update Brainstorm (menu Update > Update Brainstorm) and try again adding the positions from the 10-05 template, it should work now.