It looks like its fixed, but no mention about it in a patch - they had to be very ashamed.
Don't think it was. I let my sub lapse for about two weeks because I was busy with work. Logged on once or twice just to see what Preferred was like and my ~210 Daily comms were reduced to the cap of 175. Upon resubscribing I still only have 175 Daily comms.
Put in a support ticket though I don't know if they can or will restore the lost comms. Even if they do we shouldn't have to submit a ticket to recover items were earned while subscribing.