ics calendar file won't import into Google calendar if Local Folders are disabled

I use my Google calendar as the only one enabled in em Client (I have local folders disabled since I like to use a couple of different machines)

When I try to import an ics calendar file (by double clicking it in web browser) em Client reports that ‘no suitable folder could be found’. The message suggests I enable local folders (which I deliberately have disabled). When I do enable Local Folders, it then does allow import of the ics file, and even allows me to select the google calendar before I save it. 

Why can em Client not see the Google calendar when local folders are disabled?

em Client Version :  7.0.26687.0  (most recent update)

Otherwise, I am very impressed with this product!