Ok, for the MSFS addons (now and in the future also), you don´t need the FMS Data Manager. The plan is, to add the MSFS addons also in the current MSFS updater and we are still working on it.
In the meantime, to update the AS CRJ, you must use the installer from the webpage. You find more details about the installation and where you find the installer here:
Please let me know, when you need more … we help where we can 
Cheers,
Richard
PS: the FMS Data Manager is ONLY for FS9, FSX, P3D and XP10, XP11 sim versions